No response elsewhere... Need an answer quickly ;) Just weighing up some options for a variable ND . I have a 77mm B+W Kaesemann Circular Polarizer, and have ordered a 77mm B+W linear (both standard sizes) to create a variable ND but think I may have done a whoopsie and will get vignetting. As a cheaper option, have any Canon 17-55/Fader ND owners experienced any vignetting on the 7D?

Cheers,
Peter

I have the 77mm Vari-ND and the same lens. And yes, there is vignetting at the wide end of the lens. It seems to disappear pretty quickly as you zoom in, but it is there at 17mm.

--SM

Thanks Stephen. I'm trying to get my B+W order changed to a slim fit.