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Old May 19th, 2008, 10:49 AM   #1
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Canon Fd Aperture.

Hey guys, new to the world of 35mm, and ive got a redrock with three canon fd lenses. My question is why is it that when i turn the aperture ring on any of the three nothing happens to my image? I mean i do most of the lighting stuff with my nd filters and stuff from the actual camera, but i was just curious. Thanks!
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Old May 19th, 2008, 10:55 AM   #2
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There are two kinds of FD-lenses. On the first kind, you only need to pull a lever to make the aperature work. On the second kind, you have to stick a pin or something in between the lever to make it stay in place. In case you wonder what lever it is, it's the one to the right in this picture:

http://www.mir.com.my/rb/photography...14AdoramaB.JPG
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Old May 19th, 2008, 10:59 AM   #3
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thanks for the speedy reply, so the lever is the thing on the mount sticking out?
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Old May 20th, 2008, 09:39 PM   #4
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in jon's picture, it is the lever on the rear of the lens (mounted on the same plane as the rear element) that is opposite the red dot. I think it is that the older, heavier metal lenses have a lever that clicks and stays in place when you push it, and the newer lenses must have the lever held in place. i bought some canon fd extension tubes on ebay which actually came with a little piece of plastic specifically made for holding that lever into place.
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Old May 20th, 2008, 10:58 PM   #5
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I just used a piece of plastic toothpick on all of my lenses
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