N°98613 · Family detail
SigmaZoom·PENTAX K mount
Sigma 18-50mm F/2.8-4.5 DC OS HSM
Specifications01
MountPENTAX K
Focal length18-50mm
Max aperturef/2.8
TypeZoom
Weight395 g
Physical length89 mm
Min focus distance30 m
Summary02
Sigma DC 18-50mm zoom for APS-C cameras in Pentax K mount. Variable maximum aperture ranges from f/2.8 to f/4.5, with Optical Stabilizer (OS) and HSM for autofocus; intended for general use/low-light flexibility.
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
This lens family is also indexed in 4 other mounts.