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Wollensak-Velostigmat Series II 7inch F4
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PostPosted: Tue Apr 05, 2011 11:32 pm    Post subject: Wollensak-Velostigmat Series II 7inch F4 Reply with quote
Big shutter, it's diameter around 12 cm. It can release with air Shocked

T B 1....300 sadly this copy has no aperture blades.


PostPosted: Wed Apr 06, 2011 1:40 am    Post subject: Reply with quote
A beauty !

Thats one of the larger Wollensak Optimo shutters.

It was like the Deckel Compound, slow times regulated by an air piston.

Very nice shutter !

Like the older Compound, I think the aperture on many of these had paper blades, not metal. So I guess many are now ruined.

I only have a couple of the smaller ones.

They are less common than the Compound shutters, even in the US, and even on US cameras, because even in the 1910's-20's the US manufacturing costs were very high.

The lens is probably a Tessar copy.


PostPosted: Wed Apr 06, 2011 2:38 am    Post subject: Reply with quote
Many thanks for these valuable info!
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