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

What did you press down?? I couldn’t see

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!

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.

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

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

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.

don’t understand what you did?? you used what tool to press what down? it happened so quick and far away. thanks

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!

Yep thanks your tip worked on some lenses i got at garage sale

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 KZfaq 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!

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!

keep it up i liked the drawing as well sometimes we loos sight of the little things . volume and video are great

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!! 😀

Your camera setup is superb! Keep it up man, you REALLY know your stuff

Duuuuude, I was pretty worried about a kit I recently purchased with multiple FD lenses. Thank you so much for explaining this!

This is the only video that helped me. Thanks

Thank you so much!

THANK YOU SO MUCH! I thought I was going to have to disassemble. turns out your explanation / solution was spot on!

This video is far from explaining how to release stuck aperture blades dude...

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.

Mannnnnnnn you saved me. Appreciate you taking the time to share this!

I have no idea what he just did🤧 does this work for an olympus lens?

Thank you sooooo much

thanks. i was able to unlock my aperture.

Thank you!!!!

Does this apply for an FL lens too?

Perfect! Quick fix. Thank you very much for making this.

this saved my life :D thanks for the Video!

Damn wtf it actually worked!

Man thanks a lot !! Your the best 🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻

my blades only move when it’s connected to the camera, and doesn’t move when it’s connected… is that normal?

this saved my life !! thank you!

Thanks for that super simple fix!

Really nice video quality

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 just saved my life 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!

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?

You are wonderful, thank you sir!

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?

Thumb up to this guy! Thanks a lot

what do you press tho i don't get it?

Can the work for a younuo 50mm 1.8 lens

Thank you, very helpful

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?

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 😄

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 😩😩

Thanks man

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

Thank you! 😊

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.

Thank you boss

Thank you

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?

sadly did not help

U r good