I posted a question a week ago where I outlined a problem I had with underexposed photos after using my friend's EOS 3 for the first time. After returning the camera, my friend shot two rolls of film and the prints came back underexposed,too. She noticed that the exposure compensation was set at -2. She returned it to neutral, shot another roll of film, and the prints were perfectly exposed. Question 1: We both thought if the Quick Control Dial switch was disabled "O" instead of "I", then exposure compensation would not work. In other words it was set to "off." We determined that the "O" really means that once you set your exposure compensation, it disables the Quick Control Dial. Sort of locking in the exposure you want. We also figured out that the exposure compensation remains effective even after the camera is switched off. Would you agree that we are correct in our assumptions? If not, what DOES "I" and "O" really mean? Question 2: If I'm shooting in manual mode, the manual states I'm supposed to set the Quick Control Dial switch to "I" so that I can use the Quick Control Dial to set my aperture. By doing so, that overrides the exposure compensation for that dial. But, if I press the <+/-> button and the main dial I would then have access to exposure compensation. Is this correct? Question 3: If I'm in manual mode, can I override the exposure compensation by adjusting the aperture/shutter speed without setting the compensation back to neutral? Sorry for the long post, but I really want to understand this camera as I plan to buy one soon. Thanks in advance. k.