N°98590 · Family detail
PentaxFisheye·PENTAX K mount·1975
Pentax SMC 17mm F/4 Fish-Eye
Specifications01
MountPENTAX K
Focal length17mm
Max aperturef/4
TypeFisheye · Wide · Prime
Release year1975
Weight234 g
Physical length34 mm
Min focus distance0.2 m
Aperture blades6
Optical elements11
Groups7
Min aperturef/22
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in petal-shaped
EraFilm era
Production statusDiscontinued
Additional Info02
ModelSMC
FormatFull-Frame
SeriesK Series Fish-Eye
Squeezenone
Lens TypeFisheye lens
Iris Blades6
Release Date1975
Data Protocolnone
Focus Zoom Rodnone
Front Diameter Mm64.5
Summary02
17mm f/4 fisheye prime lens for Pentax K-mount cameras, producing an ultra-wide, exaggerated field of view. Used for creative wide-angle effects and close-to-camera perspectives.
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.