My testing of 4 stacked projectors, 20,000 lumens brightness comparison vs 3 vs 2 vs 1 Cheap DIY 20,000 lumens projector brightness testing, comparsion
+Tim Z Hi Tim, I'm considering doing this for a large outdoor movie projection. My budget is a little lower than the $2600 that two Epson 1960s are. I was considering a Benq MH741. This projector 4000 lumens projector is $899 and has "corner fit" correction like the epson, so it should work the same way, right? Thanks
+Alfred Martin sorry, I only worked with NEC and Epson projectors before so I know you can move the corners with small increments to make this work. I have never worked with Benq projectors before so I cannot comment on that brand.
You could put two different colored gels in front of the lenses to help take the guesswork out of which grid is from which Beamer. Red and green for example. On perfect registration you’ll get yellow lines.
I built this rig for a recent event (September 15, 2016) and it works I used it for over 6 hours! There are some caveats though... There are omissions in the video and perhaps they aren't entirely necessary, but would have been nice. 1 - Decide on how you can position your projectors on each board. Mine were mounted using the straight edge of the board to keep each one aligned. Position also has to consider the lens' position left and right. 2 - Create a paper template for the projector mounting points. This will make drilling holes way easier. 3 - Drill the corner holes slightly larger than the threaded rod. You need enough play that the boards do not hang when you move them. 4 - The video implied that tweaking the blending of the two projectors was an easy thing to do. It is not. 5 - As the video states, you must have a projector that allows for corner HDMI adjustments. 6 - Turn off remote control on the upper unit as the video stated. Use the wireless remote for the lower unit. 7 - If you do events, determine how far you need to be away from the screen. Once you have this setup you will not want to move it. This thing is a real pain to setup. I used MDF and the threaded rod would easily get hung up when moving the top board/shelf. It does not double the brightness, but it does make enough of a difference that it is worth the hassle. That is all.
I was thinking why not invert one of them and use image flip and image shift. That way you could mount them bottom to bottom on a board and rear mount the entire rig using a bracket or something, it would only be slightly bigger than a commercial projector.
Is that because, as with most perception, the relationship between actual brightness and perceived is logarithmic. So a light meter may say something is double brightness but it may only appear 50% brighter
Thank you so much for posting this Tim!. I was able to stack two of the Epson 1940W projectors and use them on a 14' x 8' da-lite rear projection screen. This worked well at two events for over 1,000 viewers where we had no control over the lighting.
Great job Tim! Our school wanted to get a big projector for our auditorium but the huge ones were just too expensive. This will be a great alternative to try out! Thank you!
Great set up especially for a basic dual platform for the projectors. For those who argue the technical aspect of getting 10,000 lumens from two 5,000 lumen projector, I say the main point is you are getting a stronger picture for way less than a 10,000 lumen projector cost wise. Wonder what a light meter would read for the two projectors verses just for one?
I'd be interested to see this technique with a couple of polarizing filters for a proper (non-interleaved) 3D projection using the passive glasses that they have in the cinema (as opposed to the expensive shutter glasses used on 3D TVs and 3D projectors). I guess it would depend on getting video that is separable into two synchronised streams and finding a polarizing filter that isn't too dark and doesn't melt in front of the lenses...
Hi you will need to learn about projector edge blending methods. Please take a look at this software fly.elise-ng.net/ it the reasonable cost solution that I found.
Nice tutorial, it seems to me that projectors with vertical lens shift would be better suited for this, as there would be no need for digital keystoning and thus no loss of quality.
Absolutely brilliant! Thank your for saving us $14,000+. This makes so much sense, yet I would have not thought of it. You have been of tremendous service - thank you!
Thanks for sharing Tim, I help out in a school and during plays our rear projection screen does not pump out enough light to contrast with our theater lights, I think Ill have a go at this.
Combined brightness will be 10,000 lumens, however our eyes and ears perceive a doubling in sound or light output on a logarithmic scale. Hope this answers some questions and clears any confusion!
Projector alignment is spot on, but 2 x 5k does not equate to 10k. Stick a meter on it and you will see that you'll only actually get around 7.5k ANSI. Don't take my word for it though, try it yourself.
very smart. cheap and effective solution. This design is amazing. during a movie event when 1 projector light bulb died u still can continue to watch the rest of the movie with half the brightness. The $13,000 projector cant do that. So, your design is a winner over the more expensive one. nicely done.
Thanks for these videos about stacking projectors. I have only just come across the concept of stacking, so this is great information for me. For more stability in the stacking stand, I would suggest that if you installed a second Nut below the Nut that sit under the platform you are adjusting, the second Nut would prevent the first Nut from any movement due to vibration or thermal changes overtime. I used to make aircraft parts and we would use this double Nut method to ensure the Jigs would not lose their tolerance. You will adjust the bottom Nut as demonstrated in this video and then when you have it in the right place you can secure it by tightening the second Nut up against the first, that way the first Nut will remain in the perfect position.
Great work Tim. Nice rig. This is a tried and true method to get more brightness from projection systems and your DIY rig is a very economical approach. Please note however that doubling the number of projectors does not double the lumens. The brightness increases logarithmically, not linearly. So two 5,000 lumen projectors equal something around 8,500 lumens as I recall (perhaps another commenter could do the math for us based on the Inverse-Square Law.) Each projector added brings less of an increase, with greatly diminishing returns beyond 4 projectors.
Combined brightness will be 10,000 lumens, however our eyes and ears perceive a doubling in sound or light output on a logarithmic scale. Hope this answers some questions and clears any confusion!
The crux of your statement is correct, @Tracy Evans, but brightness is indeed doubled. It's the eye's PERCEPTION that doesn't see "double" the brightness, as @Astor Rosic pointed out before.
Tracy: you are just plain wrong. Most people in the event business have this point of view, but it just isn´t true. Use a lumen meter and check it for yourself...
I have the cree x2000vx rgb 88watts led projector and its pretty bright and with higher wattage rgb leds and different lense options it could of easily been manufactured for large venue use at similar cost.
I do a large Christmas display at my home for Angels for Animals and Toys for Tots. THANK YOU for this video. Very simple, practical and effective. Its solves my problem and opens all kind of doors and creative processes. Thank you for sharing.!!!!
I think that this is a great solution. The only caveat that I'd offer is that you are taking a hit to contrast. But the proof is in the projection and I'm sure that when you're using your 2x or 4x rig, the image looks better and better for your application the more of the projectors you turn on. When you're chaining projectors, have you noticed any lag in signal further down the chain? Or is the 4th projector's signal still seemingly in sync with the first one?
I used short VGA cables chain them from one projector to the next and did not experience any lag. I did run into problems with weak signal when I try to run long VGA line to the projector. That problem can be solved by buying a low cost 1 to 2 or 1 to 4 Powered VGA Splitter Amplifier amzn.to/2vJZ344
Hi Tim, this is a great tool for using projection mapping and stuff... We are a church here in Mexico and I was wondering if there is any way of achieving this with projectors that doesn't have the corner keystone option? Please let me know if there is a tweak or something we could do with this projectors so we can make it happen! Thank you!
You can download and try Immersive Display PRO see if that software will work for you. That software will let you do digital image adjustment/alignment for each projector.fly.elise-ng.net/index.php/downloads
This is a GREAT video. Thank you SO much for taking the time to make such a clear and easy to understand video for no other reason than to help the rest of us!!
For people who say this doesn't work my guess is they never buy anything with more than one bulb, LED flash lights, photo lighting etc, because more bulbs never add more light. laugh. :) and their car has one head light only. ;) so what if lumens aren't exact. give the guy credit for saving money. great job. God Bless
Exactly. I can't stand people sometimes. Always critical. They are commenting on the guys video showing them it works and how he did it. You can't win. Thumbs up to him.
Russell Grover Some people just love talking shit. I think this mans work and video explaining his process is extremely well done, fair play and thumbs up..
I would had tryed to mount them with the top one upside down and slide shifted so the lenses comes alinged each other and to reduce the gap between each of them at the minimum ( top to top) projector, almost touching. That way, alignment would make more sense as the light sources would become almost near as a single light souce.
Actually, based on Disneyland Resort's Disney California Adventure mostknown attraction, World of Color does use this type of projector stacking. The reason why they did it this way is to make a very bright projector (my possible guess to the actual lumens of the professional type projectors are possible at least 20,000 lumens) they used the same way as Tim did in order to projector that vibrant image through the water screen. On my opinion, doubling a single 5,000 lumen projector will not give you a 10,000 lumen projector in total, it is possible that it will only total up to 7,750 lumens or even 8,050 lumens in total.
Could you reduce weight with smaller threads (bolts) and use aluminum for your shelves? Those Epson Projectors are not that heavy. Also if you don't mind used projectors like the Epson you have and even better models with prices under $200. Or less less than $100. Let me know I can give you a couple of places to look.
Hi Tim Do you think I can use the same technique to project on an 1.43 screen by stacking two projectors, I'm not sure how should I edge blend them, Considering I'm using 4k cinema projectors
Very cool. I would have made the shelves out of thin aluminum with holes, and made them closer together. Everything else was new to me though. Good job.
Hi ... Can The projectors be placed side by side? I am doing a large event and would like to hang the projectors from the ceiling and do not want to buy a ceiling projector hanger. I usually hang the projector from the "air wall" and because of the weight of the projector (35lbs Panasonic DW6300 and hanging from one point on the ceiling) do not want to stack vertically and was interested if I can place the projectors next to each other(horizontally) and if this would work ??? Thank you
Yes that will work. In this video th-cam.com/video/kbCWMMfJT2o/w-d-xo.html I have 4 projectors stacked. As you see they are not all top and bottom conf. I have them side by side also.
What's the furthest distance this would project and still look amazing? I think from the back of our church to the projection screen it's 50 to 60 feet...
I have place projector raging 22 feet to 100 feet in distance and no issue. The most critical problems you need to solve are: 1. 1. Cannot control ambient light. It will cause your image washout/hard to see2. 2. You don’t have the correct lens/projector and/or setup for the distance you are trying to work with. Your image is too small (no good) or too large (too much digital cropping - light loss, res loss).
Man ur a smart man would gave figured that out by the time of the end of the world life or death situation. But in today's time things r very costly and it pays to have time and patience ! You made this look easy and it is with ur instructions u save a lot if people with the resources and not enough money achieved the goal they thought they were sold when we buy a decent projector but double two into one to combine light into time and sync them we might be closer to time travel then we think!!!!!
Hi Tim nice video sharing. By the way, do you know to use the 2 projectors to produce a 3D image by using passive 3D glasses instead of using active 3D glasses? Tks.
i love how wild99hd says it doesn't work, as if stacking the two projectors creates a black hole and makes less light. The goal was to make a brighter image, it worked. Thanks Tim z for the explanation this has solved my problem i believe. How large can these projectors confidently project?
I have projected on the 24 feet X 13 feet stucco wall with medium ambient/stage lights and I am very happy with the results. I have done the similar size projection with yellow flat theater stage curtain with lights off and audience told me they could not tell the difference in image quality, brightness between movie theater and my video projection.
If I had a pair of identical projectors mounted on the ceiling together (and I do) I would want to be able to control them independently with their IR remotes, but of course messages from remote will go to both units. It would be interesting to try taking a page from the playbook of polarizing-3d-projector fan (which I am). One could add polarizing filters to the ir sensor of each projector, each at 90 degree angle difference from each other and install one on the output of a remote. In theory turning the remote one way should give commands to just one projector and turning it 90 degrees would send messages to the other. Also since you have two projectors you have two remotes (hopefully). You could put polarizing filters on both remotes (at 90 degree angles) and fun-tack the remotes to a board for convience. If all goes well you could then control each projector with each remote when its tuned right. This is all in theory, but it might be worth a try. I personally have not been motivated to do this since my home theater projectors can be reached just by extending my arm upward. In churces the projectors are mounted considerably higher up. :-)
So they are projecting on top of each other's image? Right... is it possible, to use 4 projector setup in a DIY rig, to project not for luminance but for coverage? i.e. 4k projection? How about software, how will you project a single video file accross 4 ?
Hi great question I will should create a video on how i did what you trying to do in the near future please subscribe to my channel so you get the new video feed. If you looking to stack 4 for increase brightness. Take a look at my video th-cam.com/video/kbCWMMfJT2o/w-d-xo.html
Victor Cabral These projectors can do the same images stacking as I shown in the video Checkout HD Epson 1985WU 4800 Lumens approx. $2000 tinyurl.com/o6c3hbh Checkout HD Epson 1980WU 4400 Lumens approx $1500 tinyurl.com/n4fyo7g
Hi, Tim, Smart idea! Thanks for sharing. One question please- I need to put them both with ceiling mount. How could I put the two projects both installed from ceiling please? Thanks & RGDS, Shuhong Yu
+Shuhong Yu You see how I mounted my project rig on top of professional tripod in the video. For celling mounting just buy the celling mounting bracket then screw the celling mounting bracket arms into the bottom of the wood platform. celling mounting $25 USDamzn.to/1VmXt20
great video, i have one query on which projector you connect the hdmi ? or lets say flash drive ? top one or the bottom one ? how does it works in case of 4 projectors ? on which projector we should connect media input ? thanks
For HDMI source you need a HDMI signal splitter. For this type of setup I always use VGA cable/connection and not HDMI. VGA cable can run longer distance without signal booster (I did one event using rear projection setup the projectors was 50 feet away from my computer). Also most high end projectors have VGA input and VGA output ports such as Epson 1960 projector, therefore, I don’t need to get a HDMI signal splitter. I just connect the computer to project 1’s VGA input then VGA output to project 2’s input then output to 3rd projector’s input then output to 4th projector's input.
Tim Z thanks for the explanation, but how do one connect the usb flash drive ? and wont the quality of video lower if we use vga cable/port instead of HDMI ? thanks
your geometry is way off, you should get projectors with lens shift and move them closer together. maybe consider 3 legs 2 up front 1 rear and stacking them on the bodies. corner correction should come last. because if you align them right, each time you move them or bump them they DON'T need to be readjusted
Ronnie Lesaguis You can do this as long as the projector can do individual corner keystone adjustments (in small increments). I only saw some Epson and NEC projectors can do individual corner keystone adjustments.
Ronnie Lesaguis You can project any "Grid Patterns" by connecting to the computer then display the grid image. You can make one or download the correct size for your projector from many websites like the one below. Convergence Test Patterns www.mediacollege.com/video/test-patterns/convergence/
Tim - Excellent video. Very informative. Q: would this DIY method work on a dark red brick house at night outdoors with very little little ambient lighting for 3D/HD house mapping projection displays? And what about the LED chips or bulbs, do you replace them?
Hi Tim...I'm hoping you still monitor this post. Im wondering if this same application could be used for short-throw projectors? Im doing up a small(ish) theater but with live performance we need short-throw to reduce projection on the actors. Recommendations on models?
Short-throw projector will work also. The key is the projectors must have "Quick Corner" this digital correction feature allows you to move any of the four corners of an image independently at setup, to adjust each corner for a perfectly rectangular picture, even when the projector is not squarely aligned with the screen. Take a look at Epson PowerLite 535W 3LCD amzn.to/2jMlYrg
Hi, I used two Epson 1960 projectors. www.amazon.com/gp/product/B007VPKR0U/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B007VPKR0U&linkCode=as2&tag=camegadg-20
Maybe the ultímate homenaje theater is stack a DLP a LED and the Láser to get aside the brightness the best of the three technologies (If mix those lights is possible without aberrations)
You'd use a DualHead2Go only when using the projectors independently to shine on different surfaces. For this project, the goal is to converge the image of multiple projectors displaying the exact same image onto one physical screen. Therefore, splitters or daisy-chains are the way to go.
Yes you can. I have done that before using heavym.net/en/ to perform the 3D space mapping then using advance video editing/compositing software in 3D space fxhome.com/hitfilm-pro to edit the final video output. I also use Matrox TripleHead2Go to split the final 4K video output to 3 projectors.
+Greg Rhodes Hi, I mount the rig on this heavy duty tripod amzn.to/1UjXUYl for projection. This tripod rated 26.5-pound maximum load center balanced. Using this method allows me setup my projector quickly because I can make quick adjustments to 4 axis pan, tilt, yaw and high.
+Tim Z Thank you very much for the reply. That's great to hear. I'm a pastor of a church plant and we're looking to do exactly what you did for your church. I was thrilled to find your video. Thank you!!!!!
Cool idea, but not an original idea. But still a great video, and if you are new to this, it is pretty darn cool. What I would like to do is a create a super gigantic screen using say 2 projectors with images side by side.
My testing of 4 stacked projectors, 20,000 lumens brightness comparison vs 3 vs 2 vs 1
Cheap DIY 20,000 lumens projector brightness testing, comparsion
+Tim Z Hi Tim, I'm considering doing this for a large outdoor movie projection. My budget is a little lower than the $2600 that two Epson 1960s are. I was considering a Benq MH741. This projector 4000 lumens projector is $899 and has "corner fit" correction like the epson, so it should work the same way, right? Thanks
+Alfred Martin sorry, I only worked with NEC and Epson projectors before so I know you can move the corners with small increments to make this work. I have never worked with Benq projectors before so I cannot comment on that brand.
One question. How close can you move this rig up to the wall? Like, to achieve a 42 inch image. Is this possible?
Could you make a 3d projector like this? If you covered the lenses with opposing filters?
Tim Z 8
You could put two different colored gels in front of the lenses to help take the guesswork out of which grid is from which Beamer. Red and green for example. On perfect registration you’ll get yellow lines.
Brilliant, Filip.
I built this rig for a recent event (September 15, 2016) and it works I used it for over 6 hours! There are some caveats though... There are omissions in the video and perhaps they aren't entirely necessary, but would have been nice.
1 - Decide on how you can position your projectors on each board. Mine were mounted using the straight edge of the board to keep each one aligned. Position also has to consider the lens' position left and right.
2 - Create a paper template for the projector mounting points. This will make drilling holes way easier.
3 - Drill the corner holes slightly larger than the threaded rod. You need enough play that the boards do not hang when you move them.
4 - The video implied that tweaking the blending of the two projectors was an easy thing to do. It is not.
5 - As the video states, you must have a projector that allows for corner HDMI adjustments.
6 - Turn off remote control on the upper unit as the video stated. Use the wireless remote for the lower unit.
7 - If you do events, determine how far you need to be away from the screen. Once you have this setup you will not want to move it.
This thing is a real pain to setup. I used MDF and the threaded rod would easily get hung up when moving the top board/shelf.
It does not double the brightness, but it does make enough of a difference that it is worth the hassle.
That is all.
I was thinking why not invert one of them and use image flip and image shift. That way you could mount them bottom to bottom on a board and rear mount the entire rig using a bracket or something, it would only be slightly bigger than a commercial projector.
Is that because, as with most perception, the relationship between actual brightness and perceived is logarithmic. So a light meter may say something is double brightness but it may only appear 50% brighter
Thank you so much for posting this Tim!. I was able to stack two of the Epson 1940W projectors and use them on a 14' x 8' da-lite rear projection screen. This worked well at two events for over 1,000 viewers where we had no control over the lighting.
Just want to add that this series of Epson projectors are Excellent for the price.
Jason Patzke Nice 8400 lumens!
Glad you took time to make this work for you.
Great job Tim! Our school wanted to get a big projector for our auditorium but the huge ones were just too expensive. This will be a great alternative to try out! Thank you!
Absolutely amazing even today I've been stacking Panasonic 6700 for my kids out door movie theater and this helped a lot
Great set up especially for a basic dual platform for the projectors. For those who argue the technical aspect of getting 10,000 lumens from two 5,000 lumen projector, I say the main point is you are getting a stronger picture for way less than a 10,000 lumen projector cost wise. Wonder what a light meter would read for the two projectors verses just for one?
The lumen meter will just measure double the brightness. It´s your eyes perception which is applying a gamma curve / log scale.
I'd be interested to see this technique with a couple of polarizing filters for a proper (non-interleaved) 3D projection using the passive glasses that they have in the cinema (as opposed to the expensive shutter glasses used on 3D TVs and 3D projectors). I guess it would depend on getting video that is separable into two synchronised streams and finding a polarizing filter that isn't too dark and doesn't melt in front of the lenses...
Isn't htere software that will merge multiple projectors?
what if you want to display them side by side and create a larger image?
Hi you will need to learn about projector edge blending methods. Please take a look at this software fly.elise-ng.net/ it the reasonable cost solution that I found.
Nice tutorial, it seems to me that projectors with vertical lens shift would be better suited for this, as there would be no need for digital keystoning and thus no loss of quality.
Absolutely brilliant! Thank your for saving us $14,000+. This makes so much sense, yet I would have not thought of it. You have been of tremendous service - thank you!
Thanks for sharing Tim, I help out in a school and during plays our rear projection screen does not pump out enough light to contrast with our theater lights, I think Ill have a go at this.
Combined brightness will be 10,000 lumens, however our eyes and ears perceive a doubling in sound or light output on a logarithmic scale. Hope this answers some questions and clears any confusion!
Projector alignment is spot on, but 2 x 5k does not equate to 10k. Stick a meter on it and you will see that you'll only actually get around 7.5k ANSI. Don't take my word for it though, try it yourself.
+Paul Breen noone cares
+sayerman burn lol
@@sayerman I care
very smart. cheap and effective solution. This design is amazing. during a movie event when 1 projector light bulb died u still can continue to watch the rest of the movie with half the brightness. The $13,000 projector cant do that. So, your design is a winner over the more expensive one. nicely done.
most 13k plus projectors are dual bulb
Thanks for these videos about stacking projectors. I have only just come across the concept of stacking, so this is great information for me.
For more stability in the stacking stand, I would suggest that if you installed a second Nut below the Nut that sit under the platform you are adjusting, the second Nut would prevent the first Nut from any movement due to vibration or thermal changes overtime. I used to make aircraft parts and we would use this double Nut method to ensure the Jigs would not lose their tolerance. You will adjust the bottom Nut as demonstrated in this video and then when you have it in the right place you can secure it by tightening the second Nut up against the first, that way the first Nut will remain in the perfect position.
what u think about using 2 mirrors to make a shortrhow projector? the firt image will be inverted...the second mirror will solve the proble?
Thanks!
Great work Tim. Nice rig. This is a tried and true method to get more brightness from projection systems and your DIY rig is a very economical approach.
Please note however that doubling the number of projectors does not double the lumens. The brightness increases logarithmically, not linearly. So two 5,000 lumen projectors equal something around 8,500 lumens as I recall (perhaps another commenter could do the math for us based on the Inverse-Square Law.) Each projector added brings less of an increase, with greatly diminishing returns beyond 4 projectors.
Nice info. Still Close enough. 1.7 times brighter then :P
Combined brightness will be 10,000 lumens, however our eyes and ears perceive a doubling in sound or light output on a logarithmic scale. Hope this answers some questions and clears any confusion!
The crux of your statement is correct, @Tracy Evans, but brightness is indeed doubled. It's the eye's PERCEPTION that doesn't see "double" the brightness, as @Astor Rosic pointed out before.
Tracy: you are just plain wrong. Most people in the event business have this point of view, but it just isn´t true. Use a lumen meter and check it for yourself...
I have the cree x2000vx rgb 88watts led projector and its pretty bright and with higher wattage rgb leds and different lense options it could of easily been manufactured for large venue use at similar cost.
I do a large Christmas display at my home for Angels for Animals and Toys for Tots. THANK YOU for this video. Very simple, practical and effective. Its solves my problem and opens all kind of doors and creative processes. Thank you for sharing.!!!!
I think that this is a great solution. The only caveat that I'd offer is that you are taking a hit to contrast. But the proof is in the projection and I'm sure that when you're using your 2x or 4x rig, the image looks better and better for your application the more of the projectors you turn on.
When you're chaining projectors, have you noticed any lag in signal further down the chain? Or is the 4th projector's signal still seemingly in sync with the first one?
I used short VGA cables chain them from one projector to the next and did not experience any lag. I did run into problems with weak signal when I try to run long VGA line to the projector. That problem can be solved by buying a low cost 1 to 2 or 1 to 4 Powered VGA Splitter Amplifier
amzn.to/2vJZ344
Can this theory be used for short throw projection
How did you drill out the holes for projector mounting screws? Did you use a template?
We used to do that same thing with two 10k's! Though it may have been more for a if one projector goes down the other one still running sort of deal.
This tutorial is AMAZING! Thank you!
Hi Tim, this is a great tool for using projection mapping and stuff... We are a church here in Mexico and I was wondering if there is any way of achieving this with projectors that doesn't have the corner keystone option? Please let me know if there is a tweak or something we could do with this projectors so we can make it happen! Thank you!
You can download and try Immersive Display PRO see if that software will work for you. That software will let you do digital image adjustment/alignment for each projector.fly.elise-ng.net/index.php/downloads
This is a GREAT video. Thank you SO much for taking the time to make such a clear and easy to understand video for no other reason than to help the rest of us!!
would it be possible to stack 2 panasonic pt-dw5100u any ideas if they have corner keystone correction?
For people who say this doesn't work my guess is they never buy anything with more than one bulb, LED flash lights, photo lighting etc, because more bulbs never add more light. laugh. :) and their car has one head light only. ;) so what if lumens aren't exact. give the guy credit for saving money. great job. God Bless
Exactly. I can't stand people sometimes. Always critical. They are commenting on the guys video showing them it works and how he did it. You can't win. Thumbs up to him.
Russell Grover
Some people just love talking shit. I think this mans work and video explaining his process is extremely well done, fair play and thumbs up..
Hi, the truth is that this video I did not see anywhere and the idea is great, thanks for sharing and I will put it into practice friend thanks :)
I would had tryed to mount them with the top one upside down and slide shifted so the lenses comes alinged each other and to reduce the gap between each of them at the minimum ( top to top) projector, almost touching. That way, alignment would make more sense as the light sources would become almost near as a single light souce.
Great idea, man! What a clever way to accomplish the task!
Great idea. Great execution of it.
What's the end result picture size in inches (am looking for 300" size and more
Actually, based on Disneyland Resort's Disney California Adventure mostknown attraction, World of Color does use this type of projector stacking. The reason why they did it this way is to make a very bright projector (my possible guess to the actual lumens of the professional type projectors are possible at least 20,000 lumens) they used the same way as Tim did in order to projector that vibrant image through the water screen. On my opinion, doubling a single 5,000 lumen projector will not give you a 10,000 lumen projector in total, it is possible that it will only total up to 7,750 lumens or even 8,050 lumens in total.
Wow I cant believe I've never thought of this, thank you!
I can build the rig but not sure I can set the projectors up the video seems fast but can I consult u for a cost
This is brilliant. Well done!
Could you reduce weight with smaller threads (bolts) and use aluminum for your shelves? Those Epson Projectors are not that heavy. Also if you don't mind used projectors like the Epson you have and even better models with prices under $200. Or less less than $100. Let me know I can give you a couple of places to look.
Even more comfortable it's with NEC Stacking correction tool, which is supported by several of their projectors. Allows to stack up to 4 devices.
REALLY?! That's actually really useful since I have a bunch of NECs lying around.
this would also be a great 3D set up but you would need a few more items like an aluminum screen and good polarizing filters
EP2250U
PowerLite 2250U 5000lumens 3LCD that's the one I want to buy is it better than the one in your video or same
Absolutely amazing! Congratulations and thanks for sharing!
If you change the position of the projectors after calibration, same process has to be repeated. Correct me if I'm wrong
That is correct.
Hi Tim
Do you think I can use the same technique to project on an 1.43 screen by stacking two projectors, I'm not sure how should I edge blend them, Considering I'm using 4k cinema projectors
Very cool. I would have made the shelves out of thin aluminum with holes, and made them closer together. Everything else was new to me though. Good job.
Need to know how to alignment projector by stereoscopic player or other way?
is it possible to do this with all projectors or they need the pattern setting? I have a couple of Sony VPL-CH355
Yes you can do this with Sony VPL-CH355 it has corner keystone function.
how large was your image able to get?
Hi ... Can The projectors be placed side by side? I am doing a large event and would like to hang the projectors from the ceiling and do not want to buy a ceiling projector hanger. I usually hang the projector from the "air wall" and because of the weight of the projector (35lbs Panasonic DW6300 and hanging from one point on the ceiling) do not want to stack vertically and was interested if I can place the projectors next to each other(horizontally) and if this would work ??? Thank you
Yes that will work. In this video th-cam.com/video/kbCWMMfJT2o/w-d-xo.html
I have 4 projectors stacked. As you see they are not all top and bottom conf. I have them side by side also.
@@Running1226 Thank You
Is that tandem tested with lumetro? two 5000 lumen projectors don't add up to 10000 lumens, I think you should check the inverse square law first.
What's the furthest distance this would project and still look amazing? I think from the back of our church to the projection screen it's 50 to 60 feet...
I have place projector raging 22 feet to 100 feet in distance and no issue. The most critical problems you need to solve are:
1. 1. Cannot control ambient light. It will cause your image washout/hard to see2. 2. You don’t have the correct lens/projector and/or setup for the distance you are
trying to work with. Your image is too small (no good) or too large (too much digital
cropping - light loss, res loss).
Ok, thanks Tim!
Man ur a smart man would gave figured that out by the time of the end of the world life or death situation. But in today's time things r very costly and it pays to have time and patience ! You made this look easy and it is with ur instructions u save a lot if people with the resources and not enough money achieved the goal they thought they were sold when we buy a decent projector but double two into one to combine light into time and sync them we might be closer to time travel then we think!!!!!
Hi Tim nice video sharing. By the way, do you know to use the 2 projectors to produce a 3D image by using passive 3D glasses instead of using active 3D glasses? Tks.
does anyone know the screen size possible to achieve with excellent quality.
How does the 3 D mapping come in? I thought mapping takes over the front and sides of the building🤦🏻♂️
i love how wild99hd says it doesn't work, as if stacking the two projectors creates a black hole and makes less light. The goal was to make a brighter image, it worked. Thanks Tim z for the explanation this has solved my problem i believe. How large can these projectors confidently project?
I have projected on the 24 feet X 13 feet stucco wall with medium ambient/stage lights and I am very happy with the results. I have done the similar size projection with yellow flat theater stage curtain with lights off and audience told me they could not tell the difference in image quality, brightness between movie theater and my video projection.
Very creative; good thinking; excellent presentation. Thank YOU!
If I had a pair of identical projectors mounted on the ceiling together (and I do) I would want to be able to control them independently with their IR remotes, but of course messages from remote will go to both units. It would be interesting to try taking a page from the playbook of polarizing-3d-projector fan (which I am). One could add polarizing filters to the ir sensor of each projector, each at 90 degree angle difference from each other and install one on the output of a remote. In theory turning the remote one way should give commands to just one projector and turning it 90 degrees would send messages to the other. Also since you have two projectors you have two remotes (hopefully). You could put polarizing filters on both remotes (at 90 degree angles) and fun-tack the remotes to a board for convience. If all goes well you could then control each projector with each remote when its tuned right. This is all in theory, but it might be worth a try. I personally have not been motivated to do this since my home theater projectors can be reached just by extending my arm upward. In churces the projectors are mounted considerably higher up. :-)
This sounds brilliant but if it's doable I wanna know how before I even buy the projectors
Reach out plss🙏
Great video, now to experiment with multiple projectors
So they are projecting on top of each other's image? Right... is it possible, to use 4 projector setup in a DIY rig, to project not for luminance but for coverage? i.e. 4k projection? How about software, how will you project a single video file accross 4 ?
Hi great question I will should create a video on how i did what you trying to do in the near future please subscribe to my channel so you get the new video feed. If you looking to stack 4 for increase brightness. Take a look at my video th-cam.com/video/kbCWMMfJT2o/w-d-xo.html
i loved the solution! i was wondering if can anyone help-me find out a 5000lumen+ full hd projector for doing this rig!??
Victor Cabral These projectors can do the same images stacking as I shown in the video
Checkout HD Epson 1985WU 4800 Lumens approx. $2000
tinyurl.com/o6c3hbh
Checkout HD Epson 1980WU 4400 Lumens approx $1500
tinyurl.com/n4fyo7g
Hi, Tim, Smart idea! Thanks for sharing. One question please- I need to put them both with ceiling mount. How could I put the two projects both installed from ceiling please? Thanks & RGDS, Shuhong Yu
+Shuhong Yu
You see how I mounted my project rig on top of professional tripod
in the video. For celling mounting just buy the celling mounting bracket then
screw the celling mounting bracket arms into the bottom of the wood platform.
celling mounting $25 USDamzn.to/1VmXt20
very professional video! i may be using your solution in the near future.
Incredible idea. Thanks for this. Well done.
I don't need 2 projectors. But that platform is "top shelf" nice.
great video, i have one query on which projector you connect the hdmi ? or lets say flash drive ? top one or the bottom one ? how does it works in case of 4 projectors ? on which projector we should connect media input ? thanks
For HDMI source you need a HDMI signal splitter. For this type of setup I always use VGA cable/connection and not HDMI. VGA cable can run longer distance without signal booster (I did one event using rear projection setup the projectors was 50 feet away from my computer). Also most high end projectors have VGA input and VGA output ports such as Epson 1960 projector, therefore, I don’t need to get a HDMI signal splitter. I just connect the computer to project 1’s VGA input then VGA output to project 2’s input then output to 3rd projector’s input then output to 4th projector's input.
Tim Z thanks for the explanation, but how do one connect the usb flash drive ? and wont the quality of video lower if we use vga cable/port instead of HDMI ? thanks
sharad k Sorry I could not think a way for USB drive to do this. From my own testing I did not see any drop in image quality using VGA vs HDMI cable.
Tim Z okie., not an issue. i was planning to do 4 projector setup using chinese brand. thanks for your reply.,
Is this option still used today in 2021
your geometry is way off, you should get projectors with lens shift and move them closer together. maybe consider 3 legs 2 up front 1 rear and stacking them on the bodies. corner correction should come last. because if you align them right, each time you move them or bump them they DON'T need to be readjusted
hi can we use other projector like Panasonic with the same stocking and cornering pattern?
Ronnie Lesaguis You can do this as long as the projector can do individual corner
keystone adjustments (in small increments). I only saw some Epson and NEC
projectors can do individual corner keystone adjustments.
copy thanx...
Ronnie Lesaguis You can project any "Grid Patterns" by connecting to the computer then display the grid image. You can make one or download the correct size for your projector from many websites like the one below.
Convergence Test Patterns
www.mediacollege.com/video/test-patterns/convergence/
Man, you don't explain how you put the base on the tripod, what type of adapter do you use
Tim - Excellent video. Very informative. Q: would this DIY method work on a dark red brick house at night outdoors with very little little ambient lighting for 3D/HD house mapping projection displays? And what about the LED chips or bulbs, do you replace them?
With little ambient lighting one 5000 lumens project will do the trick. I don't mod the LED chip or mod the light bulbs.
Hi Tim...I'm hoping you still monitor this post. Im wondering if this same application could be used for short-throw projectors? Im doing up a small(ish) theater but with live performance we need short-throw to reduce projection on the actors. Recommendations on models?
Short-throw projector will work also. The key is the projectors must have "Quick Corner" this digital correction feature allows you to move any of the four corners of an image independently at setup, to adjust each corner for a perfectly rectangular picture, even when the projector is not squarely aligned with the screen. Take a look at Epson PowerLite 535W 3LCD amzn.to/2jMlYrg
I absolutely love your video it’s smart and gracious fun to watch as well, thank you
can I do that with two panasonic projectors pt-bl50 and the other one panasonic projector pt -bl51?
Should work, as long as they have a feature like Quick Corner. Otherwise you'll have to get projection mapping software and that's wallet murder.
what is the 4th step? i could not get it
Fantastic Job! Thanks for posting this. Which Epson 5k lumen projectors did you use?
Hi, I used two Epson 1960 projectors.
www.amazon.com/gp/product/B007VPKR0U/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B007VPKR0U&linkCode=as2&tag=camegadg-20
Thanks for sharing your method of getting 10,000 lumens on the cheap. You helped me out alot!
Well done for coming up with this solution... And thank you for sharing it
very creative. Nice work!
Thats pretty cool. Thanks for sharing your expertise.
Very Smart and well prepared
Maybe the ultímate homenaje theater is stack a DLP a LED and the Láser to get aside the brightness the best of the three technologies (If mix those lights is possible without aberrations)
Bon jour j ai un data show hitachi mode l 4050 j ai pas connue ou programme 3D comme il faut faire merci
Just what I'm looking for. Thanks for sharing.
Very nice! Do you connect the two projectors together via daisy chain or with two video cards or something like a triplehead2go?
Ben Easler daisy chain VGA input to VGA output ports on projector
You'd use a DualHead2Go only when using the projectors independently to shine on different surfaces. For this project, the goal is to converge the image of multiple projectors displaying the exact same image onto one physical screen. Therefore, splitters or daisy-chains are the way to go.
Will pixel count be double too ?
so 1080p x 2= 2 k pixel quality ?
No, the pixels are lined up.
Great tip for saving Ken.
GREET JOB !!!!!!!!! ALL THE HATERS OUT THERE ARE JUST PISSED THAT YOU SAVED 14,000 $ TO GET THE SAME PICTURE THEY PAID $20,000 TO GET!!!!! LOL
so you can do this with more than one they can show the same image just make it bigger but be closer
Great vid Tim!
THX for posting!
its like setting the register on a printing press
Awesome Thanks very brilliant.
I save $1000 of dollars thanks to you Tim
I need to use this idea for my business, I want to put images and video on the windows dressing with a retroproyector visualiced on a vinyl. Can I?
Yes you can. I have done that before using heavym.net/en/ to perform the 3D space mapping then using advance video editing/compositing software in 3D space fxhome.com/hitfilm-pro to edit the final video output. I also use Matrox TripleHead2Go to split the final 4K video output to 3 projectors.
Awesome stuff 😎👍 nice work!
Great and so easy thanks to you
God bless you in your ministry :)
Tim, do you mount it on the tripod for projecting or was it just for the video? If you do, how stable is it?
+Greg Rhodes Hi, I mount the rig on this heavy duty tripod amzn.to/1UjXUYl for projection. This tripod rated 26.5-pound maximum load center balanced. Using this method allows me setup my projector quickly because I can make quick adjustments to 4 axis pan, tilt, yaw and high.
+Greg Rhodes This is the tripod head I used which can handle the weight of this heavy rig amzn.to/1nBGdXj
+Tim Z Thank you very much for the reply. That's great to hear. I'm a pastor of a church plant and we're looking to do exactly what you did for your church. I was thrilled to find your video. Thank you!!!!!
Cool idea, but not an original idea. But still a great video, and if you are new to this, it is pretty darn cool. What I would like to do is a create a super gigantic screen using say 2 projectors with images side by side.