Quick answer
The Tamron SP 35-80mm f/2.8-3.8 Adaptall-2 is a wide-angle to short telephoto zoom lens covering 35-80mm at f/2.8 for the Pentax K mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
This 35-80mm f/2.8-3.8 standard zoom lens from Tamron fits Pentax K mount cameras, from the Tamron SP series. The range covers everything from wide scenes to portraits, so it works as a general-purpose lens.
Tamron SP 35-80mm f/2.8-3.8 Adaptall-2 specifications
- Brand
- Tamron
- Mount
- Pentax K
- Focal length
- 35-80mm
- Maximum aperture
- f/2.8
- Lens type
- Zoom
- Format coverage
- full-frame
- Released
- 1980
- Optical construction
- 9 elements in 8 groups
- Autofocus motor
- none
- Minimum focus distance
- 0.27 m
- Filter thread
- 62 mm
- Weight
- 386 g
- Length
- 76.5 mm
- Diameter
- 64.5 mm
Specification source: en.wikipedia.org
What can you shoot with the Tamron SP 35-80mm f/2.8-3.8 Adaptall-2?
At 35-80mm this is a wide-angle to short telephoto zoom, which typically suits:
- Landscapes and cityscapes
- Street and travel photography
- Environmental portraits and interiors
- Everyday and street photography
- Natural-perspective portraits
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 | 35–80mm | 25.4–54.4° | 30.3–63.4° |
| APS-C | 1.5x | 53–120mm | 17.1–37.8° | 20.4–44.8° |
Frequently asked questions
What mount does the Tamron SP 35-80mm f/2.8-3.8 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 35-80mm f/2.8-3.8 Adaptall-2?
It zooms across 35-80mm with a maximum aperture of f/2.8. That makes it a wide-angle to short telephoto lens.
Is the Tamron SP 35-80mm f/2.8-3.8 Adaptall-2 a prime or a zoom lens?
It is a zoom lens covering 35-80mm, so you can reframe without moving. Its maximum aperture is f/2.8.
What is the Tamron SP 35-80mm f/2.8-3.8 Adaptall-2 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 53–120mm on full frame, with a 17.1–37.8° horizontal and 20.4–44.8° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Tamron SP 35-80mm f/2.8-3.8 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.
More Tamron lenses for Pentax K
All Tamron lensesOther 35-80mm lenses
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