Sigma 10-20mm f/3.5 EX DC HSM vs Tamron 18-270mm f/3.5-6.3 Di II PZD

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

Sigma

Pick the Sigma 10-20mm f/3.5 EX DC HSM if

You want a wider view: 10mm vs 18mm at the wide end

Pick the Tamron 18-270mm f/3.5-6.3 Di II PZD if

You need more reach: 270mm vs 20mm at the long end

Spec differences

14 differences

Specifications that differ between the Sigma 10-20mm f/3.5 EX DC HSM and the Tamron 18-270mm f/3.5-6.3 Di II PZD
	Sigma 10-20mm f/3.5 EX DC HSM	Tamron 18-270mm f/3.5-6.3 Di II PZD
Brand	Sigma	Tamron
Type	Wide Zoom	Superzoom
Format	APS-C	not listed
Focal length	10-20mm	18-270mm
Weight	520 g	not listed
Length	88.2 mm	not listed
Diameter	87.3 mm	not listed
Filter thread	82 mm	not listed
Min focus distance	0.24 m	not listed
Max magnification	0.15×	not listed
Aperture blades	7	not listed
Optical design	13 elements / 10 groups	not listed
Autofocus motor	HSM	not listed
Image stabilization	No	not listed

2 identical specs hidden: mount, max aperture. Show all

Mount: Pentax K both
Max aperture: f/3.5 both

Our notes

Sigma 10-20mm f/3.5 EX DC HSM

A 10-20mm f/3.5 APS-C wide-angle zoom lens, the Sigma 10-20mm f/3.5 EX DC HSM is designed for Pentax K mount bodies, with Hyper Sonic Motor autofocus. It covers wide angles for landscapes, interiors and architecture.

Our notes

Tamron 18-270mm f/3.5-6.3 Di II PZD

A 18-270mm f/3.5-6.3 APS-C superzoom lens, the Tamron 18-270mm f/3.5-6.3 Di II PZD is designed for Pentax K mount bodies, with quiet motor-driven autofocus. A high-ratio travel zoom covering wide-angle to telephoto in one lens.