Quick answer
The Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] is a ultra-wide wide zoom lens covering 11-18mm at f/4.5 for the Pentax K mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
About this lens
The Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] is an APS-C wide-angle zoom lens covering 11-18mm at f/4.5-5.6 for Pentax K mount cameras, from the Tamron SP series with aspherical elements. It covers wide angles for landscapes, interiors and architecture.
Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] specifications
- Brand
- Tamron
- Mount
- Pentax K
- Focal length
- 11-18mm
- Maximum aperture
- f/4.5
- Lens type
- Wide Zoom
- Format coverage
- aps-c
- Minimum focus distance
- 0.25 m
- Filter thread
- 77 mm
Specification source: wikidata.org
What can you shoot with the Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF]?
At 11-18mm this is a ultra-wide wide zoom, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
Its smaller maximum aperture favours daylight shooting and keeps the lens compact.
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 | 17–27mm | 67.4–95° | 77.4–105.3° |
Frequently asked questions
What mount does the Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF]?
It zooms across 11-18mm with a maximum aperture of f/4.5. That makes it a ultra-wide lens.
Is the Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] a prime or a zoom lens?
It is a zoom lens covering 11-18mm, so you can reframe without moving. Its maximum aperture is f/4.5.
What is the Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 17–27mm on full frame, with a 67.4–95° horizontal and 77.4–105.3° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Tamron SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF] fit?
Any Pentax K-mount camera, including Pentax K-1, Pentax K-3, Pentax K-3 II, Pentax K-3 Mark III, and Pentax K-30 and 15 more.
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
Other 11-18mm lenses
Pentax
HD Pentax-DA* 11-18mm f/2.8 ED DC AW
11-18mm · f/2.8 · Pentax K
Tamron
SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF]
11-18mm · f/4.5 · Nikon F
Tamron
SP AF 11-18mm f/4.5-5.6 Di II LD Aspherical [IF]
11-18mm · f/4.5 · Sony A
Tamron
SP AF 11-18mm f/4.5-5.6 Di-II LD Aspherical (IF)
11-18mm · f/11.0 · Canon EF
Browse by focal length: 11mm lenses, 18mm lenses