Pentax-A 50mm f1.4 problem I have just received this lens and love it so far - the smooth manual focusing and speed is a dream! Anyhow, I'm having one issue - I have the aperture ring set to "A" and am using the camera in manual ("M") mode. However, every time I take a photo the shutter speed and aperture seem to change. I can't see any logic to it. If I set the aperture on the lens ring, the shutter speed still changes itself each time I press the shutter release, though of course the aperture stays the same in this scenario. Could anyone provide any suggestions? |