I purchased a D100 about 3 weeks ago, and am thoroughly enjoying learning how to use it. However, I have two issues which are driving me nuts:
1) I'm using an AF-S Nikkor 24-85mm lens for most of my shooting. I tend to do 99% of my shooting in the Program mode. I'm finding that the shutter speeds that the camera is coming up with are unusually slow. I tried taking a picture of a person who was indoors, with the sun shining on their face. The best the camera seemed to be able to come up with was f3.5 and 1/10sec exposure. The ISO was set at 320ISO. I can't believe that it couldn't use a faster shutter time given that the sun was shining on the persons face! A 1/10sec shutter speed makes it hard to achieve a "sharp" picture without using a tripod. I'm attaching a copy of the picture that resulted.
2) I usually have the camera set on Auto ISO. However, I'm finding that the ISO doesn't seem to vary from 200. I would assume (please correct me if I'm wrong) that if the speed gets too low, that the camera would up the ISO to achieve a higher shutter speed. Is this not how it works?