So my Canon AE-1 Program aperture doesn't close down past f/4 when using the DOF preview. I've tried a different lens and same thing so it is a problem with the camera. Both the lenses I have are 50mm 1.8 FD lenses. I think the aperture lever has lost it's strength like others have had happen.
My question is - is this fixable? ...and will it limit my aperture to f/4 when shooting or is it just for DOF preview?
Here is a video of trying to close down to f/22: https://streamable.com/2st6jp
Thank you.