N°106706 · Family detail
CarlWide·CONTAX mount
Carl Zeiss / Zeiss-Opton Biogon 21mm F/4.5
Specifications01
MountCONTAX
Focal length21mm
Max aperturef/4.5
TypeWide · Prime
Field Notes02
Zeiss Opton Biogon 21mm f/4.5 is a fixed 21mm prime ultra-wide lens for the Contax mount, designed for landscape and architectural use. It has a fixed aperture f/4.5.
AI-assisted summary — verify against linked sourcesSources03
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Other Mounts03
No alternate mounts are indexed for this family yet.