Sigma Mirror 400mm F/5.6

Specifications01

MountPENTAX K

Focal length400mm

Max aperturef/5.6

TypeMirror · Telephoto · Prime

Field Notes02

Sigma Mirror 400mm f/5.6 fixed-focal lens for the Pentax K mount. Mirror (catadioptric) telephoto design intended for long-distance subjects; aperture is f/5.6.

AI-assisted summary — verify against linked sources

Catalog note · source: kentfaith

Sources03

kentfaith.esVisit ↗

allphotolenses.comVisit ↗

Other Mounts03

This lens family is also indexed in 9 other mounts.

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MINOLTA SRView lens

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NIKON FView lens

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NIKON F DXView lens

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OLYMPUS OMView lens

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400mmf/5.6