N°101382 · Family detail
SiriusWide·PENTAX K mount

Sirius 28mm F/2.8 MC Automatic

Specifications01

Focal length28mm
Max aperturef/2.8
TypeWide · Prime

Summary02

Sirius 28mm prime lens for the Pentax K mount with a maximum aperture of f/2.8, intended for general photography. Manual-focus construction is implied by the model name.

AI-assisted summary — verify against linked sources

Specifications from kentfaith

Where 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.

Sources03

kentfaith.esVisit ↗
allphotolenses.comVisit ↗

Other Mounts03

This lens family is also indexed in 1 other mount.