Tamron 100-400mm f/4.5-6.3 Di VC USD vs Sigma 120-400mm f/4.5-5.6 APO DG OS HSM

Both are Pentax K telephoto zoom lenses. Here is what actually differs.

Tamron

100-400mm f/4.5-6.3 Di VC USD

f/4.5USD

Full specs

Sigma

120-400mm f/4.5-5.6 APO DG OS HSM

f/4.5HSM

Full specs

Pick the Tamron 100-400mm f/4.5-6.3 Di VC USD if

You want a wider view: 100mm vs 120mm at the wide end

Pick the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM if

Our spec data shows no clear advantage for this lens.

Spec differences

8 differences

Specifications that differ between the Tamron 100-400mm f/4.5-6.3 Di VC USD and the Sigma 120-400mm f/4.5-5.6 APO DG OS HSM
	Tamron 100-400mm f/4.5-6.3 Di VC USD	Sigma 120-400mm f/4.5-5.6 APO DG OS HSM
Brand	Tamron	Sigma
Format	not listed	Full frame
Focal length	100-400mm	120-400mm
Filter thread	67 mm	77 mm
Max magnification	not listed	0.24×
Aperture blades	not listed	9
Optical design	not listed	21 elements / 15 groups
Autofocus motor	USD	HSM

5 identical specs hidden: mount, type, max aperture, min focus distance, image stabilization. Show all

Mount: Pentax K both
Type: Telephoto Zoom both
Max aperture: f/4.5 both
Min focus distance: 1.5 m both
Image stabilization: Yes both

Our notes

Tamron 100-400mm f/4.5-6.3 Di VC USD

A 100-400mm f/4.5-6.3 full-frame telephoto zoom lens, the Tamron 100-400mm f/4.5-6.3 Di VC USD is designed for Pentax K mount bodies, with Vibration Compensation. The range suits sports, wildlife, events and portraits.

Our notes