I have film loadedSet a slow shutter speed
With lens on camera, open the back.
Set different apertures on lens and fire camera while looking through lens from the rear.
Does the lens stop down to different diameters with different aperture settings?
You can change just hard to explain how to do so , you push down a couple levers and it allows youAlso, when off the camera, a FD lens aperture shouldn't change when you rotate the aperture ring.
You can rewind the film and then test the lens.I have film loaded
A mechanical link tells the lens aperture to stop down to shooting aperture when the shutter button is pressed.
- There is a mechanical linkage between lens and body.
- When you move the aperture ring, it causes a little lever to move, which mechanically interacts with a lever in the body, telling the metering system what aperture is selected on the lens.
- If you remove the lens and actuate the aperture ring, you will see the location of the moving lever on the lens, and then you should see the corresponding lever in the mount, and it should be able to move freely...its position is passively determined by the position of the lever on the lens.
The FD mount system allowed automatic diaphragm function, and a new signal pin (compared to FL mount lens) supported full-aperture metering.
A second signal pin for the "auto" setting of the aperture dial, plus a linkage to allow the camera to set the degree of diaphragm opening, enabled integral auto-exposure.
Understanding that will help to diagnose where your problem originates, in the inability to change the aperture ring position.
Waste one frame. Set to slow shutter speed and f/16 and release while you are looking into the lens. If you’re lucky you’ll also get a self-portrait.I have film loaded
I tried it with bulb setting and held shutter while I had it set to f22 and the diaphragm was not closed anywhere close to that.Waste one frame. Set to slow shutter speed and f/16 and release while you are looking into the lens. If you’re lucky you’ll also get a self-portrait.
I just tested it by wasting a shot I set it shutter speed to bulb and set it at f22 I looked in the lens and held down the shutter it did not close passed what looks like f2.8You can rewind the film and then test the lens.
Have you read the owners manual?
https://www.cameramanuals.org/canon_pdf/canon_ae-1_program.pdf
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