Smc Pentax-A 645 55mm F/2.8

Specifications01

MountPENTAX 645

Focal length55mm

Max aperturef/2.8

TypePrime

Release year1984

Weight410 g

Filter size58 mm

Min focus distance0.45 m

Aperture blades8

Optical elements8

Groups7

AutofocusNo

StabilizationNo

Aperture controlAperture ring (Manual settings + Auto Exposure setting)

Lens hoodRH-B58 - Screw-type round

TeleconvertersPentax Rear Converter-A 645 2X→ 110mm F/5.6

EraFilm era

Production statusDiscontinued

Additional Info02

Lens TypeWide-angle prime lens

Field Notes02

Pentax 645 SMC A is a 55mm f/2.8 prime medium-format lens for the Pentax 645 mount. It’s typically used for standard photography (e.g., portraits and general shooting) with a fast normal aperture.

AI-assisted summary — verify against linked sources

Catalog note · source: thelensdb

Sources03

thelensdb.comVisit ↗

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Other Mounts03

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