I was playing around with mine I just got. Shooting in manual mode or any mode for that matter even though the minimum aperture is 3.5 it seems the lowest I can stop it down to is 3.8. The other night it wouldn't go below 4.0 or 4.5 can't remember exactly. Am I missing something? Shouldn't I be able to pull the aperture downtown whatever the minimum is anytime I want?