This question is for olympus e-pl1 only since it has the best jpeg engine ever (arguably) . Guess which camera I have. Ok so RAW is raw. You do it so you don't loss anything. What's the difference between L, M, S and Superfine and Normal, besides the obvious. For example if in a low light situation would LS give you anything more the LN? Would a M size picture combine pixels thus give you the equivalent of higher light intensity? Please tell me why you use what you use. Thanks in advance.