Pentax smc Pentax-DA Fish-Eye 10-17mm f/3.5-4.5 ED IF 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

smc Pentax-DA Fish-Eye 10-17mm f/3.5-4.5 ED IF

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Sigma

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

Verdict at a glance

Pentax smc Pentax-DA Fish-Eye 10-17mm f/3.5-4.5 ED IF 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	smc Pentax-DA Fish-Eye 10-17mm f/3.5-4.5 ED IF	10-20mm f/4-5.6 EX DC HSM
Brand	Pentax	Sigma
Mount	Pentax K	Pentax K
Type	Fisheye	Wide Zoom
Focal length	10-17mm	10-20mm
Max aperture	f/3.5 (faster)	f/4.0
Released	2006	n/a
Blades	6	n/a
Format	aps-c	n/a
Groups	8	n/a
Af motor	screw-drive	n/a
Elements	10	n/a
Weight g	320	n/a
Length mm	71.0	n/a
Diameter mm	69.0	n/a
Min focus m	0.14	n/a
Max magnification	0.39	n/a

Pentax smc Pentax-DA Fish-Eye 10-17mm f/3.5-4.5 ED IF

This 10-17mm f/3.5-4.5 fisheye lens from Pentax fits Pentax K mount cameras, with extra-low dispersion glass. It suits dramatic perspectives, astrophotography and creative wide-field work.

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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