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Bencini Bluestar 12,5 mm, f/1.9, what is it?
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PostPosted: Fri Aug 04, 2017 7:36 am    Post subject: Bencini Bluestar 12,5 mm, f/1.9, what is it? Reply with quote
From a Bencini Comet 8 camera for Double-Eight film I have removed the lens.
It consists of four elements, not cemented. We have a biconvex first element in contact with a plano-concave one, a spacer ring, another plano-concave element in contact with another biconvex one. The two flat surfaces are innermost. +--+


This is a dialytic system like the Goerz Celor but coated. I have to see yet how it performs. The camera is disassembled, it needs an overhaul. Funny mechanical design!

Last edited by screwunscrew on Wed Aug 09, 2017 9:51 am; edited 1 time in total


PostPosted: Sun Aug 06, 2017 5:30 pm    Post subject: Reply with quote
One step further. It’s the Wollensak Normal Cine Raptar as depicted on the left side of this prospect:

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