Sigma Mirror 400mm F/5.6

Specifications01

MountM42

Focal length400mm

Max aperturef/5.6

TypeMirror · Telephoto · Prime

Field Notes02

Sigma Mirror 400mm f/5.6 is a fixed focal-length mirror (catadioptric) telephoto lens for long-distance shooting, typically for wildlife or astronomy. It uses a mirror design rather than conventional glass for focusing optics.

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.

CANON FDView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

CONTAX/YASHICAView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

KONICA ARView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

MINOLTA MDView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

MINOLTA SRView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

NIKON FView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

NIKON F DXView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

OLYMPUS OMView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6

PENTAX KView lens

Sigma Mirror 400mm F/5.6

400mmf/5.6