Quote Originally Posted by Steve Smith View Post
I will have to find my FG manual to check, but I think in manual mode, it measures the light at the time of exposure so assuming the aperture has closed down, it should be able to work.

I don't see how aperture priority can work though.

On page 21 of the FG manual Nikon mentions that the camera goes into 'closed loop' mode in P and A; I guess it probably reads the exposure off the film plane after the mirror has gone up, if it waited for the aperture to stop down before it fired the mirror, that would slow down everything- it might, though, I don't own one to check with.