N°106001 · Family detail
PentaxWide·M42 mount·1968
Asahi Super-Takumar 20mm F/4.5
Specifications01
MountM42
Focal length20mm
Max aperturef/4.5
TypeWide · Prime
Release year1968
Weight251 g
Min focus distance0.2 m
Aperture blades5
Optical elements11
Groups10
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hood58mm - Clamp-on rectangular
TeleconvertersNot available
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeUltra-wide angle prime lens
Field Notes02
Asahi Super-Takumar 20mm F/4.5 is a manual-focus M42 prime wide-angle lens for still photography. The fixed f/4.5 maximum aperture suits general and landscape use, including close-to-infinity focusing.
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Other Mounts03
No alternate mounts are indexed for this family yet.