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Lens Adapter

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I have an old one from QHY, kind of similar, just for Canon, The tricky part is allways the backfocus on those things. 

Your QHY has quite some backfocus: 20 mm without the adjuster ring. Your lenses have 45 mm bf, Nowhere is mentioned how much of the bf this adapter takes...

Would be nice to have more information about that, but I cannot find it anywhere...

This statement: " The maximum CCD diameter that can be used with these adaptors in 110mm " worries me a little, too.

You will still need a mount...


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