Polaroid CU-5

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The Polaroid CU-5 is a professional fixed focus camera designed for close-up and macro photography. The Tominon f4.7 127mm lens, stopping down to f45 is housed in an unnamed (possibly Copal Polaroid) shutter, with speeds from 125th to 1 second, plus 'B' and 'T' settings, with cable release. It has a built in ring flash and PC socket. The removable Polaroid type 100 film back has a built in darkslide and an accessory shoe. Extension tubes could be fitted between the lens unit and the film back. The film back has a tripod socket designed to fit the dedicated pistol grip.

The aperture and shutter speeds are hidden from the user underneath a cover marked '5" Polaroid CU-5'. This cover has three numbered settings for different films, corresponding to the table on the side of the camera. Setting '3' is f45, for use with Type 667 film, 3000 ISO, '2' is f11 for Type 339 film at 600 ISO (with filter), '1' is f9 (not marked, the setting is halfway between f11 and f8) for Types 664 at 100 ISO, 669/665 at 75 ISO and Type 331 at 400 ISO with filter. Opening this cover shows all the aperture and shutter speed settings, as well as the cable release; the shutter release is a trigger-like lever on the bottom of the lens unit.