I am not sure where else to ask this, I have a nikon 17-55 f/2.8 lens, and I want to use it on my modded canon 450d for some wide sky photography. However, even when I set the aperture to f/2.8 on the nikon body and remove it, it closes the iris down to about nothing. I have no manual aperture ring like I do on my less expensive nikon lenses. Is there a way to keep the iris wide open, so that I can put it on my canon with my adapter ring? I can do this no problem with my other nikon lenses using the aperture ring setting. It took me several outings before I figured out why I had to expose forever when putting that lens on my canon body. My nikon has too much amp glow and still has the IR filter so it is of limited use for what I am trying.
Anyone know any way around this?
Regards
Keith Garrett
Wolfeboro NH
