the vignetting are just visible at the four corners.
You may try with a single step down ring.
cheers
aziz
Mark Allison
17-Jun-2003 02:56
Aziz-
I purchased the Olympus B-300 lens to add to my existing Nikon telephoto based on your suggestion posted here. I am very disappointed in the amount of vignetting when using this combination. I would need to crop 1/4 off of the images to remove the dark borders. Didn't you have this problem?