I have six Schneider lenses for my 4x5 which have front element threads in sizes from 49mm up to 105mm. All of my round filters are 105mm. I have put together a hodgepodge collection of step-up rings that allow me to use my filters with each of my lenses. However, they are mostly generic brands of poor quality, some of which I can hardly screw into my lenses and filters. The one Schneider step-up ring that I have works beautifully.
I would like to find Schneider step-up rings in all the sizes I need. (I also hear Heliopan's rings are very good as well.) I know both Schneider and Heliopan make rings in each of the sizes that I need, but for the life of me, I cannot find them. I have tried all of my usual sources (B&H, Adorama, etc.) and have had no luck.
Does anyone out there know of any source for what I am looking for? Special order waiting times are not a problem. Thanks.
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