Auto Mamiya / Sekor SX 21mm F/4.0

Specifications01

MountM42

Focal length21mm

Max aperturef/4

TypeWide · Prime

Field Notes02

21mm f/4.0 wide-angle lens for M42 screw mount, intended for general wide-angle use such as landscapes and architecture. Fixed maximum aperture at f/4.

AI-assisted summary — verify against linked sources

Catalog note · source: kentfaith

Sources03

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Other Mounts03

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