N°98379 · Family detail
TamronZoom·PENTAX K mount
Tamron SP AF 17-50mm F/2.8 XR Di II LD ASPH IF
Specifications01
MountPENTAX K
Focal length17-50mm
Max aperturef/2.8
TypeZoom
Weight430 g
Physical length82 mm
Min focus distance27 m
Summary02
Tamron SP AF 17-50mm f/2.8 XR Di II LD ASPH (IF) is a standard zoom for APS-C DSLR use on the Pentax K mount, offering a constant f/2.8 aperture for low-light and everyday shooting.
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 5 other mounts.
CANON EFView lens
Tamron SP AF 17-50mm F/2.8 XR Di II LD ASPH IF
CANON EF-SView lens
Tamron SP AF 17-50mm F/2.8 XR Di II LD ASPH IF
MINOLTA/SONY AView lens
Tamron SP AF 17-50mm F/2.8 XR Di II LD ASPH IF
NIKON FView lens
Tamron SP AF 17-50mm F/2.8 XR Di II LD ASPH IF
NIKON F DXView lens
Tamron SP AF 17-50mm F/2.8 XR Di II LD ASPH IF