Tokina Sony A Zoom

AT-X 17-40mm f/3.5-4.5

17-40mm
f/3.5
Zoom

Quick answer

The Tokina AT-X 17-40mm f/3.5-4.5 is a ultra-wide to standard zoom lens covering 17-40mm at f/3.5 for the Sony A mount. Its moderate maximum aperture works best in good light or with a higher ISO.

About this lens

This 17-40mm f/3.5-4.5 wide-angle zoom lens from Tokina fits Sony A mount cameras. It covers wide angles for landscapes, interiors and architecture.

Tokina AT-X 17-40mm f/3.5-4.5 specifications

Brand: Tokina
Mount: Sony A
Focal length: 17-40mm
Maximum aperture: f/3.5
Lens type: Zoom

What can you shoot with the Tokina AT-X 17-40mm f/3.5-4.5?

At 17-40mm this is a ultra-wide to standard 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	17–40mm	48.5–93.3°	56.8–103.7°
APS-C	1.5x	26–60mm	33.4–70.4°	39.7–80.6°

Try the field-of-view calculator

Frequently asked questions

What mount does the Tokina AT-X 17-40mm f/3.5-4.5 use?

It uses the Sony A mount, so it fits Sony A cameras directly.

What is the focal length of the Tokina AT-X 17-40mm f/3.5-4.5?

It zooms across 17-40mm with a maximum aperture of f/3.5. That makes it a ultra-wide to standard lens.

Is the Tokina AT-X 17-40mm f/3.5-4.5 a prime or a zoom lens?

It is a zoom lens covering 17-40mm, so you can reframe without moving. Its maximum aperture is f/3.5.

What is the Tokina AT-X 17-40mm f/3.5-4.5 equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 26–60mm on full frame, with a 33.4–70.4° horizontal and 39.7–80.6° diagonal field of view. These figures are calculated from the focal length and crop factor.