Seneca Duo

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5570947006_72585caec4_m.jpg 5570359227_839c01e01e_n.jpg
images by Dirk HR Spennemann (Image rights)

The Duo was a dustproof leaf shutter with slow speeds downto 1 second. The images show it with a Seneca 5×7 Rapid Rectilinear lens. It was made by Wollensak.

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