Photo: Christian Fischer (CC BY-SA 3.0)
Quick answer
A popular APS-C standard zoom with a constant f/2.8 aperture, much used on Pentax bodies with in-body stabilization. It has a 67mm filter thread and a minimum focus distance of 0.27 m.
Pros
- Constant f/2.8
- Compact 67mm filter size
- Constant aperture with in-body stabilization support
- Works with Pentax in-body stabilization
Cons
- APS-C only
- No weather sealing
- Plastic build
Verdict
A well-liked standard zoom for Pentax crop bodies.
About this lens
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF): an APS-C fast standard zoom lens with a 17-50mm focal length and a maximum aperture of f/2.8, made for Pentax K mount cameras, from the Tamron SP series with aspherical elements. A bright standard zoom for APS-C DSLRs with a constant f/2.8 aperture.
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) specifications
- Brand
- Tamron
- Mount
- Pentax K
- Focal length
- 17-50mm
- Maximum aperture
- f/2.8
- Lens type
- Zoom
- Format coverage
- aps-c
- Minimum focus distance
- 0.27 m
- Filter thread
- 67 mm
Specification source: wikidata.org
What can you shoot with the Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)?
- Everyday APS-C shooting
- Events and weddings on APS-C
- Indoor and low-light zoom work
Its bright maximum aperture handles indoor and evening light reasonably well.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| APS-C | 1.5x | 26–75mm | 27–70.4° | 32.2–80.6° |
Frequently asked questions
Does the Tamron SP AF 17-50mm f/2.8 have its own stabilization?
This version does not. Pentax bodies stabilize the sensor, so the lens benefits from in-body shake reduction.
What filter size does it use?
The front thread measures 67mm, which is the size to look for when choosing a polarizer, UV or ND filter.
How close can it focus?
Minimum focus is 0.27 m. That is close enough to place a foreground subject against a wide background.
Alternatives for Pentax K from other brands
All Pentax K lensesSame mount, overlapping focal range, closest maximum aperture first.
More Tamron lenses for Pentax K
All Tamron lenses
Tamron
17-70mm f/2.8 Di III-A VC RXD
17-70mm · f/2.8 · Pentax K
Tamron
SP 17-35mm f/2.8-4 Di LD Aspherical [IF]
17-35mm · f/2.8 · Pentax K
Tamron
SP AF 17-35mm f/2.8-4 Di LD Aspherical [IF]
17-35mm · f/2.8 · Pentax K
Tamron
SP AF 17-50mm f/2.8 XR Di II VC LD Aspherical [IF]
17-50mm · f/2.8 · Pentax K
Other 17-50mm lenses
Browse by focal length: 17mm lenses, 50mm lenses