Originally posted by hallienothailey So historically, I have been able to adjust the f-stop using the aperture ring to whatever I would like, for example my 85mm prime lens has the adjustable aperture ring with the "A" as well. Now when I have this lens on (this holds true for others as well), regardless of what stop I adjust the ring to, even on "A" it remains at f/1.8. I have tried switching settings back to not use the aperture ring and select it through the camera and this does not seem to work either.
Basically, I expect to be able to change apertures, but I'm stuck at f/1.8 no matter what I do
I don't mean to be insulting, but you do realize that the aperture won't "stop down" until the moment of exposure, don't you? Try setting the shutter speed at 1 sec, and the aperture at f/16. Look into the lens while you trip the shutter. You should see the aperture close down to f/16 and re-open to f/1.8 when the shutter closes.
Are the pictures properly exposed?