Thanks for all your help. Makes sense. Think I'll buy a canon lens for the rebel and a nikon body for the nikon lens and use them both to their full potential and glory. Thanks again.

Hi. I have a Canon EOS rebel 2000 film camera and a nikon digital lens which I am trying to couple with the rebel via an adapter. The adapter works fine and the lens fits no problem. But when I look through the viewfinder on the rebel through the Nikon lens it appears to be dark, not well lit and when I click the shutter and look at the aperture opening there is no movement. The lens does not react. Also, the aperture reading on the rebel stays at zero when I attempt to adjust the aperture. The shutter speed adjusts properly but not the aperture. That could just be the camera. I can focus the lens but it seems like it is focusing somewhat abnormally. Any help and expertise and suggestions would be greatly appreciated. Thanks