Quick answer
The Vivitar 85-205mm f/3.8 Auto Tele-Zoom is a short telephoto to telephoto telephoto zoom lens covering 85-205mm at f/3.8 for the Pentax K mount. Its moderate maximum aperture works best in good light or with a higher ISO.
About this lens
Vivitar 85-205mm f/3.8 Auto Tele-Zoom: a telephoto zoom lens with a 85-205mm focal length and a maximum aperture of f/3.8, made for Pentax K mount cameras. The range suits sports, wildlife, events and portraits.
Vivitar 85-205mm f/3.8 Auto Tele-Zoom specifications
- Brand
- Vivitar
- Mount
- Pentax K
- Focal length
- 85-205mm
- Maximum aperture
- f/3.8
- Lens type
- Telephoto Zoom
What can you shoot with the Vivitar 85-205mm f/3.8 Auto Tele-Zoom?
At 85-205mm this is a short telephoto to telephoto telephoto zoom, which typically suits:
- Portraits with a flattering perspective
- Events and weddings
- Isolating subjects from the background
- Sports and action
- Wildlife and birds at moderate distance
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 | 85–205mm | 10–23.9° | 12–28.6° |
| APS-C | 1.5x | 128–308mm | 6.7–16.1° | 8–19.3° |
Frequently asked questions
What mount does the Vivitar 85-205mm f/3.8 Auto Tele-Zoom use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Vivitar 85-205mm f/3.8 Auto Tele-Zoom?
It zooms across 85-205mm with a maximum aperture of f/3.8. That makes it a short telephoto to telephoto lens.
Is the Vivitar 85-205mm f/3.8 Auto Tele-Zoom a prime or a zoom lens?
It is a zoom lens covering 85-205mm, so you can reframe without moving. Its maximum aperture is f/3.8.
What is the Vivitar 85-205mm f/3.8 Auto Tele-Zoom equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 128–308mm on full frame, with a 6.7–16.1° horizontal and 8–19.3° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Vivitar 85-205mm f/3.8 Auto Tele-Zoom 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 Vivitar lenses for Pentax K
All Vivitar lensesOther 85-205mm lenses
Browse by focal length: 85mm lenses, 205mm lenses