I'm rather new to photography and the other thread got me thinking. Why can't I take a long exposure photo? I have a Nikon D60 and I'm using the 18-55 mm 1:3.5-5.6 lens that came with it. I understand that the shutter will be open longer so the aperture needs to be as small as possible (higher #) to reduce the light. If I set the shutter speed to 2 seconds, I can't get the aperture above f36. The photo is always over exposed. Is this because of the camera or the lens or something I am missing? Would a higher or lower ISO help?