I'm starting to think that it may have been a sticky aperture. However, I'm going to pay careful attention to the situation over the next few days. I just made about seventy shots with the aperture fully open, and didn't see any exposure differences.Thanks!
Shel "Am I paranoid or perceptive?" > [Original Message] > From: Kostas Kavoussanakis > Err, same aperture, shutter and ISO, what robo*? Sticky aperture or (I > doubt it) dramatic light change.
