[LargeFormat] Double Protar Lens

[Ole Tjugen]

The Zeiss Series VII Protars were sold as "Satz-anastigmat", so all elements 
are designed for use alone or in combination with another of either the same 
focal length, or ONE step up or down.

I can't really imagine that the rear lens should be usable alone, but not the 
front? Or maybe front and rear are the same, so there's no difference which 
one you use?

Ole

>===== Original Message From Clive Warren <Clive.Warren@megacycle.co.uk> =====
>Have just picked up a Bausch and Lomb Series VII Protar for a 5x7 camera
>that appears to be a double convertible rather than a triple. Without
>looking at the books, I thought they were all triple convertibles. Does
>anyone have one or used one?
>
>Cheers,
>            Clive
>
>
>
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