This is a dumb question. I recently bought my first Canon DSLR (T4i) after many years with Canon PowerShot S5 IS. I am very happy with it and improving my shooting abilities the more I shoot -- plus having two kids provide plenty of such opportunities. I have just stepped up to Manual shooting and want to go "all natural" in my pictures (i.e. only focus on exposure, ISO, aperture, and shutter speed with no camera processing). Thus, I was wondering if there any of the dozens of image/camera settings (white balance, background blah blah, etc) that I can just keep "off" or if any should be included. For example, white balance should it be 'auto' or should I consider it more carefully depending on situation? There are so many settings that it seems like they must have a purpose in improving pictures... is that so?