your statement is very misleading to newbies :bsmilie: let me help you clarify. For those who dunno what P mode is, P mode means Program Mode, in this mode the cam determines the shutter speed and aperture value for you (like Auto) however you are free to do minor modification to the given setting usually by turning the main dial to adjust a couple of stops +/- for either the shutter speed or aperture. Of course, pro photogs are not deprived from using this mode too.
Depending on the subject, P is a perfectly good mode for professionals to be using
Note also that AE comp will be available.