Photo: Robert S. Donovan (CC BY 2.0)
Quick answer
The Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM is a standard to short telephoto zoom lens covering 50-135mm at f/2.8 for the Pentax K mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
The Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM is a fast short-telephoto zoom lens covering 50-135mm at f/2.8 for Pentax K mount cameras, with extra-low dispersion glass. A premium weather-resistant "Star" series lens for Pentax K-mount cameras.
Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM specifications
- Brand
- Pentax
- Mount
- Pentax K
- Focal length
- 50-135mm
- Maximum aperture
- f/2.8
- Lens type
- Zoom
- Format coverage
- aps-c
- Released
- 2007
- Optical construction
- 18 elements in 14 groups
- Aperture blades
- 9
- Autofocus motor
- SDM
- Maximum magnification
- 0.17x
- Filter thread
- 67 mm
- Weight
- 685 g
- Diameter
- 77 mm
Specification source: en.wikipedia.org
What can you shoot with the Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM?
At 50-135mm this is a standard to short telephoto zoom, which typically suits:
- Everyday and street photography
- Natural-perspective portraits
- Documentary and travel work
- Portraits with a flattering perspective
- Events and weddings
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 | 75–203mm | 10.2–27° | 12.2–32.2° |
Frequently asked questions
What mount does the Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM?
It zooms across 50-135mm with a maximum aperture of f/2.8. That makes it a standard to short telephoto lens.
Is the Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM a prime or a zoom lens?
It is a zoom lens covering 50-135mm, so you can reframe without moving. Its maximum aperture is f/2.8.
What is the Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 75–203mm on full frame, with a 10.2–27° horizontal and 12.2–32.2° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM 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 Pentax lenses for Pentax K
All Pentax lenses
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