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Pentax 645

Pentax 645
Pentax 645 with 75 mm normal lens
Overview
MakerPentax
TypeSingle-lens reflex camera
Lens
Lens mountPentax 645 A mount
Sensor/medium
Film speedISO 6-6400 in 1/3 stop increments
Recording mediummedium format film
Focusing
Focusmanual (auto on 645N)
Exposure/metering
Exposureautomatic, manual
Exposure meteringTTL center-weighted
Flash
Flashhot shoe, socket, X-sync
Shutter
Shuttervertical cloth focal plane
Shutter speeds15 s - 1/1000 s, Bulb
Viewfinder
Viewfinderfixed eye-level pentaprism
General
Battery6 AA
Weight46.2 ounces (1,310 g)
Made inJapan

The Pentax 645 is a medium format single-lens reflex system camera manufactured by Pentax. It was introduced in 1984, along with a complementary line of lenses. It captures images nominally 6 cm × 4.5 cm on 120, 220, and 70 mm film, though the actual size of the images is 56 mm × 41.5 mm.