Fstop said there is a flip out ai follower on the FE and from what you say the 35mm lens is pre-AI and won't have the AI cutout on the aperture ring of the lens , which is where the AI follower on the camera engages the aperture ring on the lens. The follower moves around the circumference of the lens mount and gives the camera aperture info it needs for metering. If you don't know about the flip out follower then you are probably mounting the pre-AI lens incorrectly with the follower in it's normal position.
See the pic of my F4 with the follower in it's normal position for AI lenses:
For pre-Ai lenses the follower should be flipped out. I don't know how it's done on the FE but on the F4 there is a small pin on the follower that you depress allowing it to be flipped out:
Here is an AI lens that has the cutout for the AI follower just below the coupling prong (metal bit that is sticking up):
And a pre-AI without the cutout. Note the smooth aperture ring base with no notches:
Here is a picture of the pre-AI lens on the F4 with the follower flipped out. Note the lens is not binding because the follower is moved out of the way:
And here is a picture of the Ai lens being mounted with the follower up in its normal position for AI lenses. Note the AI cutout on the lens. In this pic I haven't fully rotated the lens yet to lock it but when I do the notch in the lens engages the follower and rotates it.
The non-flip out AI follower on the FE2 doesn't allow for use of pre-AI lenses without modification:
Just for good measure this is how the meter coupling works on the non-AI cameras:
Last edited by Lamar; 05-13-2013 at 08:59 PM. Click to view previous post history.