N°110031 · Family detail
PentaxZoom·PENTAX 645 mount·1995
Smc Pentax-A 645 45-85mm F/4.5
Specifications01
MountPENTAX 645
Focal length45-85mm
Max aperturef/4.5
TypeZoom
Release year1995
Weight805 g
Filter size77 mm
Min focus distance0.5 m
Max magnification0.2198
Aperture blades8
Optical elements11
Groups9
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodScrew-type RH-RD77 (round)
TeleconvertersPentax Rear Converter-A 645 2X→ 90-170mm F/9
EraPro
Production statusFilm era
Additional Info02
Lens TypeStandard zoom lens
Field Notes02
Pentax 645 SMC A-mount zoom lens with a 45 –85mm focal range and maximum aperture of f/4.5, intended for general-purpose medium-format photography.
AI-assisted summary — verify against linked sourcesOther Mounts03
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