Aperture Blade stuck: how to canon fd 50mm quick hack
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- เผยแพร่เมื่อ 7 ก.ย. 2024
- aperture blades stuck in Canon FD 50mm F1.4 SSC lens. This video shows a quick way to release the stuck blades and have the aperture ring working as supposed to. its pretty easy. all you need is a pointed object to depress a lever below the silver breech that would have the bayonet flanges free to move. if this repair or simple hack as i would call it doesn’t work out, then you might have to check how your fd lens adapter is mounted or dissemble the vintage fd lens to clean the aperture blades.
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aperture blades stock means the aperture ring doesn't rotate leaving the lens stock at a single aperture like f1.4 or f11.
although you may be able to still use the lens anyway, And there will be a time
when I want to use A different aperture like , f4, f 8 or even f16 to have everything in front of my lens in focus. So
I just have to repair the broken Lens. before you decide to dissemble the lens, you might want to do this first.
The silver ring or breech lock is sliding over a depressed lever.
Now as long as the lever is down, The bayonet flanges would movable and the aperture blades would also move in correspondence with the setting aperture.
There is a cut beneath this silver ring, on the part where the red dot is.
when the lever gets to that cut, it gets released to fit that cut which in turn, blocks the movement of the aperture blade.
So when the lever press back down and the sliver ring is twisted in a way to get the lever away from the fitting, the bayonet flanges begins move and so should the aperture blades.
Sometimes the blades may no work if your adapter is not properly fixed
Like not having the adapter lock activated. so don't forget to always twist you fd adapter into its lock position .
activating the adapters lock makes a bar in the adapter to push the bayonet flange close to it a little to the right.
That little push is what is needed to get the blades respond to your aperture change.
If the level is depressed and the adapter lock is activated , then the lens should "honours" the setting of the aperture ring.
Is it doesn’t
Then you probably would have to dissemble the lens and have it cleaned.
i almost gave up on this lens until i figured this out.
tell me, have you ever havd to hack your camera gear to have it function as suppose to
i have the same problem with my Vivitar 28mm F2 FD mount lens. I emailed the seller as the description stated that it was fully functional but either the auto lever or the blades are stuck. Haven't heard back. Do you have any suggestions on how to clean them or fix it? Thank you!
So sorry to hear that. Have you tried what I did in the video.
If you have and it didn’t workout, maybe you should try to dissemble the lens but doing that with much care.
www.pentaxforums.com/forums/114-maintenance-repair-articles/391582-kiron-vivitar-28mm-f2-24mm-f2-sticky-iris-fix.html
I found this link for you. Maybe it could be of help
I hadn't used one of my favorite lenses for over a year because I thought the aperture was stuck. When I checked the lock and it "magically" started working again I just sat there stunned and in disbelief that it was so simple. Thank you so much!
What did you press down?? I couldn’t see
OMG I thought I was losing my mind trying to figure out why this lens wasn't doing anything and I am so happy the fix was this easy. Thank you so much!
This is not a fix. This lens is operating normally. FD lenses are supposed to rest stationary at f5.6. Mounting the lens engages a release which allows the lens iris to open/close. This release can be done without mounting the lens by pressing in the button and shifting the mount. Because of the number of lenses now being used on mirrorless bodies, people have been playing around with the releases on these lenses. I suggest googling the proper operation of FD and Breechlock lenses so that you will know how to diagnose aperture behavior in Canon lenses. If you manipulate the mount improperly it will break the linkage.
This video is meant to help people who assumes the lens is broken when the breech lock is not in its resting position.
It’s demonstrated how what would have had them render the lens unusable could be solved. For them it is a quick fix to what would have being a problem
Or a quick info on the fd lens if that would be more appropriate to you
@@videotechxplained7020 My comment is appropriate.
Totally agree. It's wrong to call it "fix" when it's no more than a "hack" how to check blades operation on unmounted lens. The real FIX takes much more time, tools and efforts. This video must me renamed.
So even when it doesn't look like it's working, it is?
@@videotechxplained7020This "quick hack " is a solution looking for a problem dude.
Thank you! I just bought a Urth FD to E-mount and couldn't make the aperture to work (it was stuck at 1.8), after understanding the mechanism logic from your video I saw that I hadn't mounted the lens correctly, and now it works. The urth adapter has a bypass ring that controlls the apperture (it doesn't go all the way to 16 for some reason but it's fine at around 8 or so). Great video :)
Thank you! this exactly described how to fix my vintage lens that i just got online. I was worried they had ripped me off for a sec. lol so glad that it's just the way they built the mount. I'm new to this
Hahaha! That was funny
I feel like you saved my butt. 🤣 you deserve a sub for that :-)
Thanks for the sub. Found the comment funny because I had the same experience with the same lens in the video. I had contacted the seller back on eBay and was discussing refund with him. But I figured it out before we concluded on the refund so I ended up keeping the lens.
Yes! Same as my story exactly!! Haha! I’m so grateful that you took the time to make this video. 🤘🏼 you rock!
I got the ring to move and the flange to move with the aperture ring, but the blades stayed at the wide open position. I believe the oil has caked onto the blades so now I need the lens to be taken apart and cleaned. The camera and lens sat in a drawer for over 30 years which explains the like-new conditionn apperance on Ebay. Thanks for giving me options to explore anyway
Did you fix it and what was the problem bei have the same issue you have
keep it up i liked the drawing as well sometimes we loos sight of the little things . volume and video are great
Your camera setup is superb! Keep it up man, you REALLY know your stuff
THANK YOU, just scored an amazing deal on this lens (under 70 AUD), assumed the seller didn't know how it worked.
Turns out it was busted as he said, but twenty seconds with a kitchen skewer and this video brought it back to life!
I guess you have passed this simple hack class😊
@@videotechxplained7020 Super helpful video! And great presentation :)
Duuuuude, I was pretty worried about a kit I recently purchased with multiple FD lenses. Thank you so much for explaining this!
Thank you very much!! I had this problem with my RMC Tokina 100 - 300mm f/5.6 but after watching your video I could solve it with the adaptor!! I had no idea what was happening!! 😀
Thanks! After getting a Canon AE-1 camera with this lenses I always wondered why my first film came with so soft images and it was because my lenses were stuck at 1.8 aperture, thank you so much man! I thought I had to send the lens to a repair shop.
You just won a new sub and many thanks for going straight to the problem!
Hey I have the same camera and the problem. Can't seem to fix it despite watching this video. Any tips? Thanks!
@@sean9820 I'm in the same position! Have you made any progress?
Success.
I dropped my Nikon 85 mm F1.8 g while attached to my D610, and thankfully, the camera was fine, but the aperture switch on the lens stuck while stopped down.
After sleeping on it and thinking about the cost to repair or replace the lens, I thought this had happened to someone before me, and my TH-cam search brought me here.
I unscrewed the 4 lens screws holding the mount in place, and after removing it, I was able to manipulate the aperture switch freeing the stuck blades, and now all is well :)
Thank you for the inspiration!
Yep thanks your tip worked on some lenses i got at garage sale
I couldn't see what you pressed to get it working. You need some lights on this as everything is too dark to see what you're doing.
THANK YOU SO MUCH! I thought I was going to have to disassemble. turns out your explanation / solution was spot on!
This is the only video that helped me. Thanks
don’t understand what you did?? you used what tool to press what down? it happened so quick and far away. thanks
Mannnnnnnn you saved me. Appreciate you taking the time to share this!
Perfect! Quick fix. Thank you very much for making this.
thanks. i was able to unlock my aperture.
this saved my life :D thanks for the Video!
Thanks for watching. May I ask what the problem was with the lens
Thank you so much!
Does this apply for an FL lens too?
Same problem here. But i can not see a lever. How does it look? I have a canon 1,4 scc too.
Is it the silver round pin? Because that in my case doesnt move at all.
Damn wtf it actually worked!
this saved my life !! thank you!
Thank you sooooo much
I have no idea what he just did🤧 does this work for an olympus lens?
Man thanks a lot !! Your the best 🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻
Boom!! Thank you!
my blades only move when it’s connected to the camera, and doesn’t move when it’s connected… is that normal?
Really nice video quality
You just saved my life thank you
I am glad to know this video has being of help to you
Thanks for that super simple fix!
Thanks for the sub
This video is far from explaining how to release stuck aperture blades dude...
Thank you very much. This made my day.
Hello. I have a Canon lens that seems to have the blades stuck. It has electronic iris control. I mean, no ring like the Nikons. I have to push the camera buttons to have the iris open or close. Do you know how to repair this? Thank you!
You are wonderful, thank you sir!
Thumb up to this guy! Thanks a lot
Thank you, very helpful
Thanks man
Tengo un problema con mi lente 50mm lo que pasa es que los puntos rojos no están alineados y por mas que e intentado hacerlo no puedo es imposible, y por ende no lo puedo ensamblar en mi canon ae1, alguien sabe como puedo solucionar ese problema?
Can the work for a younuo 50mm 1.8 lens
I have the same lens but it seems to be loose and the aperture ring slides closed when I let go of it. Is there any way to fix this?
what do you press tho i don't get it?
Thank you! 😊
I thought my lens was broken but it tried this and it worked! but when I attach the lens to the camera the aperture gets stuck again :( seems like the lever doesn't stay down once I turn the silver ring to align the little red dot to its initial position and attach it back to the camera. could you help me out? thank you very much!
I didn’t really get you but did you make sure the adapter is locked after attaching the lens to it.
You tried what? I can't tell what to push and where from the video. Pls explain.
Thank you!!!!
Thank you
Great video. I have a Nikon 19mm that the aperture stopped working. The camera (D850) reads f/2.8 ironically, for the lens only opens up to f/4. I use that lens with an dapter, do you think that adapter could have damaged any connecting transmission from the lens to the camera? That lens, the 19mm Tilt-shift, does not have the little level on the back side of the lens. What is your opinion on this please please?
I wish I could help but I am Afraid I have no idea. But since you can see a f2.8 on camera when the lens’ wide aperture is f4 might be as a result of the lens not being able to communicate with the camera properly. Kindly try another adapter if you haven’t
@@videotechxplained7020 Thanks anyway. I think it is just that but sometimes these things have simple workarounds. But it looks like I'll be sending it in.
Hi, how can I get in touch with you? I want to send you videos about my problem… my lens stuck in 2.8. And I can’t do the click that you do in 2.40 minute 😩😩
Hey mine is stuck, but i already loaded a film roll in it, can i still do it with The film inside? Thank you for this video 😄
I have never tried it on such cameras but I think if the lens is detachable it might not affect the film. Just my opinion
The problem is I just got a speed booster and my vivatar 28mm everytime I put it on it must move the lever. Very annoying part of FD adapters
May I ask what speed booster it is you got?
I am having the same problem with a canon fd 85mm ssc lens. The aperture blades do no move past f5.6. I am using the blue fotodiox adapter to sony e mount.
Does this happen even when not attached to the adapter ?
@@videotechxplained7020 No. When the lens has the rear cap on or even off, the aperture blades stay put as I turn the aperture ring.
You might have to dissemble and have it cleaned
@@videotechxplained7020 yeah ill take a deeper look into it. My buddy managed to get it to go past f11 now. But no access to f16, the final stop on the lens.
I also didn't know that the adapter acts like a de-clicked aperture too. So I pretty much have the full f stop range there. But I rather have the full clickable range from the lens itself.
That’s great news already
Are you like dark
hey man, thank you so much for the vid got a sub from me. I have the FD 300mm f4l (non breach lock) and I can't get it to be unstuck when an extender or adaptor is on it. Can't for the life of me figure it out. any thoughts?
Thanks man. Thanks a beast of a lens you have there. Although I have not got my hands on that lens I read some great stuff about it and some other Canon FD telephoto lenses. First you said it’s a non- breach lock . Could you say what kind of mount it has or if the mount has being modified. I read it comes in fd versions and newfd versions. And again could you tell me about the adapter, maybe I could find more info on it to understand how it works to be able to figure out the problem. Thanks for the sub, very appreciated.
@@videotechxplained7020 so the L series lenses actually ONLY come in the NFD mount (no breach lock ring). Apologies if I didn't make that very clear.
sadly did not help
U r good
Thanks for the compliment
Thank you boss