I read a previous post where someone had tested a Heliopan Center Filter on a Ro denstock and Nikkor lens and had identical results as with the Rodenstock center filter. Has anyone tried a Heliopan Center Filter as a replacement for Schneid ers Center Filters for the SuperAngulons?
I just got a 58 mm XL and am noticing some vignetting shooting in the 6 x 9 form at when I use tilts (I was shooting at f11 on color chromes.) The price of the Heliopan center filter is about a $100 cheaper than the Schneider. Both have id entical specs, 67 mm front filter on the lens, 86 mm thread on the outside of th e center filter, 1 1/2 stops exposure compensation. Will they give nearly ident ical results?
Also, is it possible to use color correction filters on top of Center Filters? I would suspect that because you've now added two pieces of glass over the lens you are degrading image quality. Any advice?