Sigma Pentax K Telephoto Zoom

100-400mm f/5-6.3 DG OS HSM Contemporary

100-400mm
f/5.0
Telephoto Zoom

Quick answer

The Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary is a short telephoto to super telephoto telephoto zoom lens covering 100-400mm at f/5.0 for the Pentax K mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

About this lens

This 100-400mm f/5-6.3 full-frame telephoto zoom lens from Sigma fits Pentax K mount cameras, from the Sigma Contemporary line with Optical Stabilizer and Hyper Sonic Motor autofocus. A long-reach telephoto zoom aimed at sports and wildlife.

Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary specifications

Brand: Sigma
Mount: Pentax K
Focal length: 100-400mm
Maximum aperture: f/5.0
Lens type: Telephoto Zoom

What can you shoot with the Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary?

At 100-400mm this is a short telephoto to super 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 smaller maximum aperture favours daylight shooting and keeps the lens compact.

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	100–400mm	5.2–20.4°	6.2–24.4°
APS-C	1.5x	150–600mm	3.4–13.7°	4.1–16.4°

Try the field-of-view calculator

Frequently asked questions

What mount does the Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary use?

It uses the Pentax K mount, so it fits Pentax K cameras directly.

What is the focal length of the Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary?

It zooms across 100-400mm with a maximum aperture of f/5.0. That makes it a short telephoto to super telephoto lens.

Is the Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary a prime or a zoom lens?

It is a zoom lens covering 100-400mm, so you can reframe without moving. Its maximum aperture is f/5.0.

What is the Sigma 100-400mm f/5-6.3 DG OS HSM Contemporary equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 150–600mm on full frame, with a 3.4–13.7° horizontal and 4.1–16.4° diagonal field of view. These figures are calculated from the focal length and crop factor.