N°123665 · Family detail
PentaxWide·PENTAX K mount·2013
HD Pentax-DA 21mm F/3.2 AL Limited
Specifications01
MountPENTAX K
Focal length21mm
Max aperturef/3.2
TypeWide · Prime
Release year2013
Weight134 g
Filter size49 mm
Physical length25 mm
Min focus distance0.2 m
Max magnification0.1701
Aperture blades7
Optical elements8
Groups5
AutofocusYes
StabilizationNo
Aperture controlNone
The aperture is controlled from the camera
Lens hoodMH-RBB49 - Screw-type dome-shaped
EraDigital era
Production statusIn production
Additional Info02
Lens TypeWide-angle prime lens
Summary02
Pentax K-mount prime lens with a fixed 21mm focal length and f/3.2 maximum aperture, intended for wide-angle use such as landscapes and general photography.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Pentax K mount has a flange distance of 45.46 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Pentax DA and FA J lenses have no aperture ring. Use an adapter with its own aperture control.
- Pentax DA lenses are made for APS-C.
- Sony EAdapter · 27.46 mm
- Canon RFAdapter · 25.46 mm
- Nikon ZAdapter · 29.46 mm
- Fujifilm XAdapter · 27.76 mm
- L-MountAdapter · 25.46 mm
- Micro Four ThirdsAdapter · 26.21 mm
- Fujifilm G (GFX)Adapter · 18.76 mm
- Canon EF-MAdapter · 27.46 mm
- Canon EFAdapter · 1.46 mm
A rear element that sticks out can hit the camera mirror.
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
No alternate mounts are indexed for this family yet.