Quick answer
The Tokina AT-X 17-35mm f/4 PRO FX is a ultra-wide to wide-angle wide zoom lens covering 17-35mm at f/4.0 for the Pentax K mount. Its moderate maximum aperture works best in good light or with a higher ISO.
About this lens
A 17-35mm f/4 full-frame wide-angle zoom lens, the Tokina AT-X 17-35mm f/4 PRO FX is designed for Pentax K mount bodies. It covers wide angles for landscapes, interiors and architecture.
Tokina AT-X 17-35mm f/4 PRO FX specifications
What can you shoot with the Tokina AT-X 17-35mm f/4 PRO FX?
At 17-35mm this is a ultra-wide to wide-angle wide zoom, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
- Landscapes and cityscapes
- Street and travel photography
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 | 17–35mm | 54.4–93.3° | 63.4–103.7° |
| APS-C | 1.5x | 26–53mm | 37.8–70.4° | 44.8–80.6° |
Frequently asked questions
What mount does the Tokina AT-X 17-35mm f/4 PRO FX use?
It uses the Pentax K mount, so it fits Pentax K cameras directly.
What is the focal length of the Tokina AT-X 17-35mm f/4 PRO FX?
It zooms across 17-35mm with a maximum aperture of f/4.0. That makes it a ultra-wide to wide-angle lens.
Is the Tokina AT-X 17-35mm f/4 PRO FX a prime or a zoom lens?
It is a zoom lens covering 17-35mm, so you can reframe without moving. Its maximum aperture is f/4.0.
What is the Tokina AT-X 17-35mm f/4 PRO FX equivalent on a crop sensor?
On APS-C (1.5x crop) it frames like 26–53mm on full frame, with a 37.8–70.4° horizontal and 44.8–80.6° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Tokina AT-X 17-35mm f/4 PRO FX 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 Tokina lenses for Pentax K
All Tokina lenses
Other 17-35mm lenses
Browse by focal length: 17mm lenses, 35mm lenses