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
Field Notes02
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 sourcesOther Mounts03
This lens family is also indexed in 4 other mounts.