I am trying to start my own portrait photoghraphy bussiness but have had some problems with my camera. I have a Pentax ist DS I thought I could put it on auto and it would do the rest but guess what? My problem is I take a picture and it looks great in the view finder but when I upload it to the computer it is so dark you can't even see it. I take it to a photo editing and auto enhance and it is perfect. I have changed batteries on my camera so they are good. Is it me? Help!!!!!!!!!