I was wondering if anyone can help me with some particular details regarding Hel iopan filters.
1) I understand that they are now being manufactured in slim mounts. Would anybo dy happen to know what the thickness of the mount is in mm? I believe that I can get about 3 plus mm of clearance on my 90/f8 Nikkor SW with a 67 mm size. I mig ht even go to 77mm, just to be safe.
2) Are all new filters manufactured in slim mounts or are other mounts also bein g manufactured? If I were to buy them from a dealer, how would I distinguish sli m from other mounts?
your comments are appreciated