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細節
Reflex camera obscura
dovetail constructed wood-body, 6 x 7½cm. glass screen, leather- hinged top, internal mirror and 3cm.-diameter lens --17cm. (6in. long); a wood-body camera obscura of home-made construction, with mirror, lens and hinged top -- 25cm. (10in. long) (2)
dovetail constructed wood-body, 6 x 7½cm. glass screen, leather- hinged top, internal mirror and 3cm.-diameter lens --17cm. (6in. long); a wood-body camera obscura of home-made construction, with mirror, lens and hinged top -- 25cm. (10in. long) (2)