> > Two basic issues: > > 1. Why the gross overexposure at slow shutter speeds?
Because you were shooting in shutter priority, and set the shutter speed to a value (1 second) that would require the lens to stop down to a very small aperture (something like f88) in order to achieve proper exposure. The lens was incapable of doing that, so it stopped down to its minimum aperture of f22. > 2. Why was there not a visible difference between images 1,2,3 (especially > 1 and 2) when using EV compensation? Because there was no difference. In the first shot, the lens stopped down to f22 instead of the f88 that would have resulted in the proper exposure. When you set exposure compensation to -1, the lens would have had to stop down even further, to f128, to get correct exposure. It could not do this, and just stopped down the the f22 it could do. > http://www.photo.net/photodb/presentation.tcl?presentation_id=253048 > > Tom C. > >
