Quick answer
The Vivitar 135mm f/3.5 Auto Telephoto is a short telephoto telephoto lens covering 135mm at f/3.5 for the Pentax K mount. Its moderate maximum aperture works best in good light or with a higher ISO.
About this lens
The Vivitar 135mm f/3.5 Auto Telephoto is a short-telephoto prime lens covering 135mm at f/3.5 for Pentax K mount cameras. The focal length is a classic choice for portraits and details.
Vivitar 135mm f/3.5 Auto Telephoto specifications
What can you shoot with the Vivitar 135mm f/3.5 Auto Telephoto?
At 135mm this is a short telephoto telephoto, which typically suits:
- Portraits with a flattering perspective
- Events and weddings
- Isolating subjects from the background
Its moderate maximum aperture works best in good light or with a higher ISO.
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 | 135mm | 15.2° | 18.2° |
| APS-C | 1.5x | 203mm | 10.2° | 12.2° |
Frequently asked questions
What mount does the Vivitar 135mm f/3.5 Auto Telephoto use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Vivitar 135mm f/3.5 Auto Telephoto?
It is a fixed 135mm lens with a maximum aperture of f/3.5. That makes it a short telephoto lens.
Is the Vivitar 135mm f/3.5 Auto Telephoto a prime or a zoom lens?
It is a prime lens with a fixed 135mm focal length. Primes usually open wider than zooms; this one opens to f/3.5.
What is the Vivitar 135mm f/3.5 Auto Telephoto equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 203mm on full frame, with a 10.2° horizontal and 12.2° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Vivitar 135mm f/3.5 Auto Telephoto 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.
