Blair Camera Co. (Boston, MA)

Metal Drop Shutter Combined with Single Achromatic Lens Variation 2 (rotating stops) / The Lucidograph Lens, c.1885-c.1890's


4x5


Notes: 

The ever-inventive Blair Camera Co. apparently placed this metal drop shutter just outside the stop wheel of a their Single Achromat Variation 2 / Lucidograph Lens.  The slide is about half the width of the lens barrel because a single achromat is only sharp at small stop sizes.  It doesn't seem to have been advertised.

References:
 

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