Need help with Canon lens mount.

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Tom Lusk Senior Member • Posts: 1,792
Need help with Canon lens mount.

I have a mint Vivitar FD Auto Wide Angle 2/28 lens with a problem.

The aperture doesn't change when the dial is rotated, either on or off a camera.

I'm assuming the taller lever (at 8 o'clock in the photo) is the signal lever and the shorter lever (at roughly 12 o'clock) is the automatic aperture lever.

The signal lever moves freely, with a stop at roughly halfway, then a lock when fully rotated.

The other lever seems to be locked in place in its slot. Is this normal? I have no other Canon FD lenses to compare it to.

All help appreciated.

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