Resolution, File Sizes, TIFF, and JPEG Compression: Ask David Bergman
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- เผยแพร่เมื่อ 26 ก.ค. 2020
- Today's question is from Joshua K, "Does a smaller file size mean the image has less resolution? What’s the best compression level to use when saving a JPEG? And should I be saving TIFF files instead?"
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![How are Images Compressed? [46MB ↘↘ 4.07MB] JPEG In Depth](http://i.ytimg.com/vi/Kv1Hiv3ox8I/mqdefault.jpg)
Another great tutorial, David. You explain topics very well and to the point. Thank you 🙏!
Very informative. Thank you very much!
Excellent question and excellent explanation. I am already an Adorama subscriber and I will be taking a look at more of your presentations David.
Thanks!
Excellent explanation. Thank you.
Wow this video was so informational. Thank you David.
Very helpful to see what happens with a completely white image in jpeg and TIFF ... good stuff; thanks!
amazing. super helpful. Thank you
Thank you, very helpful!
Thank you so much David!
Thanks bro, you made that simple!
Hi David- very informative. I have the D850 and I understand the quality it can (and does) produce. I do not like shooting in RAW because (I know this sounds silly) I like the look of the JPEGS the camera cooks. I can crop and do some adjustments if needed. When shooting RAW I find I can never get them to look as good...
I have read that shooting at a lower resolution will make the image look shaper? 45MP will show the slightest imperfections in technique. On the camera you can adjust the JPEG sm, med lg but you can also adjust basic, norm and fine. I understand the file size is just that, size of the file and the mode is compression ratio but can you explain which one and why it would make the image look sharper?
This is making soooo much sense. At least for right now. ❤
What was the bit depth (8 or 16) used for the Tiff files?
There are 2 basic types of DNG files based on the Tiff specifications. 1) A mosaic file which is the one created during import with the intention of replacing the camera RAW file. 2) A linear file very much like a Tiff. The first is intended to replace the RAW file as the "digital negative".and is a smaller file. The second is used for what I call "development" files, containers that can carry the adjustments from one software program to another for further processing and back to the source system. These are 12-16 bit either DNG or Tiff and are very large, 3X the size of the original RAW or DNG (type 1) file. These development files are discarded once the process is compete and a "Master" file is created leaving me with a "Master" and a "Source" file.
This master file is what you are describing in your video which is done at the end of what can be a very simple or a very complex process. So, What was the bit depth used for the Tiff files?
The more I learn about jiff files the more I love them. ❤
Hi David - thanks for the great video.
My scenario is - I have a website where I sell my wildlife and landscape edits. I understand to watermark and reduce file size for the site itself so clients can VIEW the image....but the site also offers that IF the client decides to purchase that image, that the site will then send them a "better" version of the image (which I upload in the background) so that they can either print or use digitally.
Should i therefore be uploading the "file to be purchased" as a TIFF file?, or just a high quality JPEG?
For reference, I use a Sony A7Riii which has a 42megapixel resolution.
Thanks in advance :)
You forgot to say something important. You can reload and retouch (many generations ) a TIFF file with no loss. Try the same with a JPEG and you are left with crap. We save everything in TIFF to use as a basic "negative" (term from the old days, even if it is a positive), and use JPEGS for distribution, viewing and printing (unless we want top quality large shots with no artifaction).
i'm in printing and i used tiff also with compression zip
Hi,
Hope your keeping well.
If quality 8 is the sweet spot which is great to know my burning question is what dimensions do I save my JPEG’s at as I’ve always wondered, especially as I’m photographing my friends wedding in a couple of weeks time.
Thanks 👍
thx you very much.
How does JPEG 2000 compare to TIFF?
I’ve never used tiff , I save as the the work I do on a pic as a psd so the org. file is not lost . Make jpegs for small prints or online. Is there any difference between tiff or psd files? Thanks
6:21 .TIFF is not an "uncompressed" format.
At 6:53 you can see it allows compression, lossless compression like .PNG with the added benefit of having metadata and layers (You're better using .PSD which despite being a more updated propietary version is ironically better supported on libre software like GIMP)
Back to .TIFF, LZW compression is a faster algorithm than PNG's DEFLATE and very similar size. ZIP is more similar to DEFLATE and gives marginally smaller size in 8bit images (and not on all images), only in 16bit the size is always smaller by a more significant 15% or so.
Oh my gosh!! You're so right!! 😮
Hello. I have some professionally photographed TIFF files ( 165MB & 590 MB ( of my larger art pieces, (approx. 6'x5 ') that I actually need to enlarge for a project that will be digital and twice as large. Is there a way to enlarge the size of these files and still maintain the clarity? Thanks in advance!
Also this way of graphing makes me think of all those matrix equations we did in highschool. I remember my math teacher telling us this is how Hollywood makes those high budget movies. They take images and edit those frames between with graphed matrix equations so frames are smoothened out between images. You just take those numbers and they're graphed. 🤔🥰
This so fascinating! So what's a higher quantity camera for if resolution and ppi can be controlled by algorithms resolution, and file size? 😂
In the past I used to erase parking lots and draw in my own raster tree's. It works unless I'm needing more shading for demention. Then that takes an algorith. I tip my hat to photographers who can get the shot they invisioned.
Using an iPhone with Neural Cam. I would LOVE to fully use TIFF after I’ve noticed it’s sharper, but BIGGER storage :(
Now i use google photos to export my pictures. Is that the best app to use ? I was using dropbox
and here I thought TIFF stood for the "Toronto International Film Festival" 🤔
but what if I need it as a tiff and need it smaller?
Hi my friend! you really speak so fast!!!...but you know what? I understood everything (but the way, English is not my main language) , I like your simple way of how you explain the subject, thank you very much, your explanation helped a lot
The presentation is so rapid that the information is difficult to follow and absorb. Adorama must be putting limits on your airtime.
I don’t remember asking this question! lol
Well David instead of Tiff for some images. Would BMP be a better choice then. I prefer and images that keep a better pixel range for printing and color. Good tip on images files
I’m not too familiar with the bitmap (BMP) format. It’s not adopted as widely by photographers, although may be used by print labs in the printing process.
@@DavidBergmanPhoto Guess you do not get to use BMP format in Mac system much. Guessing somewhere dome the line there be middle ground with some new wonder file format. There always RAW to fall back too
@@felixrodriguez4263 I'd be reluctant to use a format that is not easily cross-platform. Last thing you want if for a client to not be able to open the work you send them.
@@DavidBergmanPhoto good point David
Good information. I do save my completed edited photo for my archiving in tiff though. I export my normal delivered files in jpg.
I save at 10 (or 100 in some apps) and use JPEG MINI PRO which saves a much smaller JPEG with NO LOSS in quality.
@4:13 - 12 is maximum file size which is *minimum* compression.
True, but I meant that it's the maximum compression SETTING. I see how that can be confused and I should have said it differently.
@@DavidBergmanPhoto If you look to the left, the setting is Quality, not compression. Maximum quality = minimum compression. The more a file is compressed the lower the quality, and the more data is thrown out, which decreases file size.
Scott Kelby has a blog post that you should NOT use TIFF files ever...
David Crooks, and what is his reasoning?
I have a question
if we need to print a 10feets * 20feets (200 square feets ) Banner how much resolution we need set...? Please clarify, i need to know bcoz iam confusing lot's of time while exporting the file to print..!
Good quality prints need at the very least 200 dpi. 10ft (12in/ft) = 120 in x 144 in
120 in x 200 dpi = 24000 px
144 in x 200 dpi = 28800 px
24000 x 28800 = 691 Mp.
You will need at least a 691 Mp image for a good 10' x 12' print. Keep in mind that 200 dpi is just the minimum. Ideally you want 300 or more dpi for even better prints.
Hi David. Are TIFF'S as editable in LR as Raw files? Thanks
Nope. Tiff is uncompressed, but it’s a “flattened” file.
Only exception I can think of is some very old raw files that used the tiff extension. I have some from the 90’s that are tiff but are actually raw. Most cameras from the last 20 years use an extension like CR2, NEF, or DNG.
Not sure what you mean by "flattened" file. I know that when one stitches together a pano or does an HDR in Lightroom, Lightroom will save it as a tiff file. Also, I've imported tiff files from LIghtroom into GIMP. I got that advice from a landscape photographer who did a tutorial on GIMP. I suppose with a tiff file there is more information to work with than a JPEG in GIMP since GIMP can not do RAW files. I'm thinking that's why he recommended importing into GIMP as a tiff file instead of JPEG. Your thoughts?
Patty Mattes Yea sorry for the confusion. What I mean by “flattened” is that the edits you made are baked into the tiff (or Jpeg) you saved. If you try and go back to adjust your exposure, for example, you will have much more latitude in the original raw then you do in the Tiff.
@@DavidBergmanPhoto Thanks!
Hey David ,
Why the Heck Tiff is Faar Bigger than The RAW itself .
What is the Point of Saving Tiff, When it is Bigger than The Source Itself .
Plz Reply 🙏 .
& Thanks for the Amazing Video !
It's just in the way that it saves the files. TIFF, by default, is uncompressed so it's very large. RAW has some "lossless" compression in most cases. The only reason to save a large TIFF is because it has all your edits "baked" in. So it looks exactly how you want, in the right color space, etc. I don't sent raw files to clients so having that tiff ready to do is helpful. As I've said, I only save a handful of TIFF files of my best images and store them in the cloud so I can easily download if needed for a client. But it's not totally necessary since I can recreate it from the RAW if needed.
@@PraveenKumar-fs6of uncompressed 14-bit 24MP RAW is 42MB whereas uncompressed 8 bit 24MP TIFF is 72MB or 16-bit 24MP TIFF is 144MB in size.
The reason is each channel in 8-bit TIFF file contains 8 bits of data for each pixel. So for a RGB color image there will be 3 channel and as a result each pixel contains 3*8=24 bits of data!
Now when it comes to 14-bit RAW file there is no separate channel for RGB (if you are familiar with Bayer sensor you would know the reason behind this). So in that case each pixel contains only 14 bits of data!
So you see in RAW there is only 14 bits of data in comparison with TIFF's 24 bit for each pixel.
Does this mean TIFF is has more quality than RAW? The answer is no because of the simple fact that TIFF is generated from RAW. And source file has to contain more image data to begin with.
However David answers to your second question of using TIFF.
Is HEIF on the new EOS R6 better than JPEG?
Yes. They are smaller and contain more data. But it’s a brand new format (iPhones can shoot HEIF also) so not widely supported just yet. Also - it’s not a raw format so I’d still want my original raws.
@@DavidBergmanPhoto Do you think HEIF will replace JPEG within 10 years?
@@bioliv1 So hard to say. There have been "better" file types that just don't catch on. It really depends on if the camera companies, Adobe, etc adopt and push the format.
@@DavidBergmanPhoto a7SIII too has HEIF!
Why not use TIFF with lossless compression? There is no downside to it really, unless you are working on a computer from the last century.
Why not use PNG? PNG uses DEFLATE, a non-patented lossless data compression algorithm.
PNG is fine for graphics, but I wouldn't use it for images. It has limited support for EXIF and IPTC metadata, and also does not support any color space beside RGB. TIFF was created for high-quality images, while I think most people use PNG for lower res (portable) graphic files.
You can use lossless compression with TIFF as well, he just chose to leave the setting at "Compression: None".
Why not use PNG instead of TIFF. Much smaller size and lossless compression.
PNG is fine for graphics, but I wouldn't use it for images. It has limited support for EXIF and IPTC metadata, and also does not support any color space beside RGB. TIFF was created for high-quality images, while I think most people use PNG for lower res (portable) graphic files.
JPG 12 is the max. on quality not max. on compression you told wrongly in in video ;-)
What???
🍧🍧
HEIC is a much better format.
I don't know if anyone has told you this but you look an awful lot like the Ancient Aliens presenter Giorgio Tsoukalos..lol
Only watched this for 4 minutes..... its lossed my mind and I will be dammed to understand..... won't be subscribing
you talk toooooo fast