Photo: Javier Perez Montes (CC BY-SA 4.0)
Quick answer
The Tamron SP 24mm f/2.5 Adaptall-2 is a wide-angle prime lens covering 24mm at f/2.5 for the Pentax K mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
Tamron SP 24mm f/2.5 Adaptall-2: a wide-angle prime lens with a 24mm focal length and a maximum aperture of f/2.5, made for Pentax K mount cameras, from the Tamron SP series. The wide view suits landscapes, architecture and environmental shots.
Tamron SP 24mm f/2.5 Adaptall-2 specifications
- Brand
- Tamron
- Mount
- Pentax K
- Focal length
- 24mm
- Maximum aperture
- f/2.5
- Lens type
- Prime
- Format coverage
- full-frame
- Optical construction
- 10 elements in 9 groups
- Autofocus motor
- none
- Minimum focus distance
- 0.25 m
- Filter thread
- 55 mm
Specification source: en.wikipedia.org
What can you shoot with the Tamron SP 24mm f/2.5 Adaptall-2?
At 24mm this is a wide-angle prime, which typically suits:
- Landscapes and cityscapes
- Street and travel photography
- Environmental portraits and interiors
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 |
|---|---|---|---|---|
| Full frame | 1.0x | 24mm | 73.7° | 84.1° |
| APS-C | 1.5x | 36mm | 53.1° | 62° |
Frequently asked questions
What mount does the Tamron SP 24mm f/2.5 Adaptall-2 use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Tamron SP 24mm f/2.5 Adaptall-2?
It is a fixed 24mm lens with a maximum aperture of f/2.5. That makes it a wide-angle lens.
Is the Tamron SP 24mm f/2.5 Adaptall-2 a prime or a zoom lens?
It is a prime lens with a fixed 24mm focal length. Primes usually open wider than zooms; this one opens to f/2.5.
What is the Tamron SP 24mm f/2.5 Adaptall-2 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 36mm on full frame, with a 53.1° horizontal and 62° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Tamron SP 24mm f/2.5 Adaptall-2 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.
