So I just got a Canon S3 IS a few days ago and Ive been taking pics of everything basically. Was out tonight and there was a guy with an LS1 FD, decided to take a few pics and here is the problem I ran in to. 1. Manual mode, Shutter set at 1/60, F/2.7 ISO 200 or 400, cant remember 2. Auto mode, camera sets shutter at 1/60, F/2.7, unsure of ISO though Both shots had the flash on, btw. So my question is, why is my manual shot so much darker than a similar shot in auto?