Quick answer
The Vivitar 19mm f/3.8 is a ultra-wide prime lens covering 19mm 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 19mm f/3.8: a wide-angle prime lens with a 19mm focal length and a maximum aperture of f/3.8, made for Pentax K mount cameras. The wide view suits landscapes, architecture and environmental shots.
Vivitar 19mm f/3.8 specifications
What can you shoot with the Vivitar 19mm f/3.8?
At 19mm this is a ultra-wide prime, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
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 | 19mm | 86.9° | 97.4° |
| APS-C | 1.5x | 29mm | 64.6° | 74.4° |
Frequently asked questions
What mount does the Vivitar 19mm f/3.8 use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Vivitar 19mm f/3.8?
It is a fixed 19mm lens with a maximum aperture of f/3.8. That makes it a ultra-wide lens.
Is the Vivitar 19mm f/3.8 a prime or a zoom lens?
It is a prime lens with a fixed 19mm focal length. Primes usually open wider than zooms; this one opens to f/3.8.
What is the Vivitar 19mm f/3.8 equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 29mm on full frame, with a 64.6° horizontal and 74.4° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Vivitar 19mm f/3.8 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.
