It is digital so I take as many pictures as necessary. But rather than chase my tail, I take my best guess at the settings, shoot the shot. Then switch to "auto" and shoot the same shot. If I like mine better fine, if I like the "auto" better; then I look at photo data an see what the "auto" settings are verse my settings. Next I can set my manual setting to the "auto" setting, to see if I get the same picture or if I am overlooking something. The bottom line is, I paid to have that personal trainer built into the "auto" setting on my camera; I may as well learn from it. The only advantage I see in trying to second guess my "auto" setting is it helps me with my old film cameras which do not have all the whiz bangs and whirly gigs and with my digital camera when I am trying for more shutter speed or depth of field.