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So here it is. Btw i can't believe my contax CZ lenses have 46mm filter diameter...
they're optically so small though !! Now that i read about noktons or
ultrons 35mm lenses being 39mm wow !!
And why are there 2 versions of the noktons, 1 multi coated, 1 single coated.
Why make a single coated lens anyways if you have a MC ? To sell it less expensive ?
What's the benefit of single coated ?