Pentax HD Pentax-DA 10-17mm F3.5-4.5 ED fisheye vs Sigma 10-20mm f/4-5.6 EX DC HSM

Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.

Pentax

HD Pentax-DA 10-17mm F3.5-4.5 ED fisheye

Sigma

10-20mm f/4-5.6 EX DC HSM

Verdict at a glance

Pentax HD Pentax-DA 10-17mm F3.5-4.5 ED fisheye is faster by 0.4 stops (f/3.5 vs f/4.0), letting in more light.
Sigma 10-20mm f/4-5.6 EX DC HSM reaches further (20mm vs 17mm).

Specification comparison
Spec	HD Pentax-DA 10-17mm F3.5-4.5 ED fisheye	10-20mm f/4-5.6 EX DC HSM
Brand	Pentax	Sigma
Mount	Pentax K	Pentax K
Type	Wide Zoom	Wide Zoom
Focal length	10-17mm	10-20mm
Max aperture	f/3.5 (faster)	f/4.0
Format	aps-c	n/a
Weight g	317	n/a
Length mm	70.0	n/a
Diameter mm	68.0	n/a
Min focus m	0.14	n/a

Pentax HD Pentax-DA 10-17mm F3.5-4.5 ED fisheye

A fisheye zoom for Pentax APS-C bodies. It weighs about 317 g and focuses as close as 0.14 m.

Pros

Zoom flexibility
Close focus 0.14 m
HD coating
Compact

Cons

APS-C only
Strong distortion
No front filters

Sigma 10-20mm f/4-5.6 EX DC HSM

This 10-20mm f/4-5.6 APS-C wide-angle zoom lens from Sigma fits Pentax K mount cameras, with Hyper Sonic Motor autofocus. It covers wide angles for landscapes, interiors and architecture.

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