Is there a problem with this lens that wont change aperture?

[gabriel_gerena]

<p><img src="/bboard//i57.tinypic.com/2cmni9d.jpg" alt="" /><img src="/bboard//i57.tinypic.com/2cmni9d.jpg" alt="" />Hi!<br /> I attached a picture showing this lens. It is not changing aperture. I tried with the Lens Turbo 2 and a normal FD adapter.<br /> The only difference I see is that piece of metal is not all the way to the side like it is on the other lenses I got and I am not sure how to make it move.</p>

<p>http://i57.tinypic.com/2cmni9d.jpg</p>

<p>Thanks!</p>

 

[gabriel_gerena]

<p><img src="http://i57.tinypic.com/2cmni9d.jpg" alt="" /></p>

[JDMvW]

<p>Not sure exactly what you're using the lens on, but<br>

1. adapters to other mounts will not trigger an automatic aperture mechanism.<br>

2. for manual aperture you have to turn off the green 'A' setting. It seems that you've done that in the picture. If so, the aperture you see in the lens should be what the orange line is pointing at.<br>

3. Aperture mechanisms do fail on some lenses, although I've never seen it on an FD lens.</p>

[chris_roberts10]

<p>If the aperture is stuck wide open, then it's quite possible that the blades got oily and then jammed. It's not common for FDn lenses, but it does happen. Otherwise, you just have to make sure that you mounted it to the adapter properly: set to smallest aperture (F22), set adapter to "open," mount the lens by lining up the red dots and twisting until it's locked in place, twist the adapter ring to "lock." If the aperture didn't move, then option #1 would be my guess.</p>

[gabriel_gerena]

<p>I just did that and I can see that metal piece moving when I change aperture but it does remain wide open. Lame :/</p>

 

[jochen_busch]

<p>FD-lenses never change aperture off the camera. So you need an adapter with on/off switch.</p>

[mukul_dube]

<p>You may need to move the chrome lever at 8 o'clock in your photo to one end of its curved slot and press to lock it there. I only had breech lock FD lenses, so those are all I know about.</p>

[Bill C1664885404]

<p>Actually, while an adapter that happens to be designed with an "on off switch" sort of operation will certainly allow off-camera aperture operation to take place, many adapters don't have the mechanical 'on-off switch' approach, which is just another potential failure point.<br />Instead, the adapters are designed with a fixed post in place, and are marked for the lens to be engaged at the RED mark (about 1 o'clock on the face of the adapter), rotated counter clockwise to midnight which allows full lens seating, then rotated right to lock in place.<br /><br /><br />CIECIO7 FD TRIPOD MOUNT ADAPTER<br /><br /> <img src="http://img.photobucket.com/albums/v630/roundball/PHOTOGRAPHY/EQUIPMENT/082913A-FDtripodnex1cropped_zpsb9c7392c.jpg" alt="" /></p>

<p> </p>

[charles_wass]

<p>I have an adapter with a "lock - unlock" ring that enables the aperture to be stopped dow.</p>

[mark_stephan2]

<p>I have some sort of Canon macro adapter that looks like a rear lens cap that works quite well. Attach it and turn the aperture ring and watch the aperture open and close. Not sure what kind of adapter you're using but I use a Canon FD to micro 4/3rds adapter that I use with a Panasonic Lumix G-1. If the lens is attached to the adapter correctly the aperture blades open and close as you turn the aperture ring. Attach the adapter with lens attached to the camera and use it in M or A mode and it works perfectly. I use a Canon new FD 28 f2 all the time. The 28 x 2 gives me a field of view of 56mm.</p>