Pentax smc Pentax-DA 18-55mm f/3.5-5.6 AL vs Sigma 10-20mm f/4-5.6 EX DC HSM

Both are Pentax K lenses for APS-C. Here is what actually differs.

Pentax · 2008

smc Pentax-DA 18-55mm f/3.5-5.6 AL

f/3.5220 g

Check price Full specs

Sigma

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

f/4HSM

Full specs

Pick the Pentax smc Pentax-DA 18-55mm f/3.5-5.6 AL if

You need ⅓ stop more light for low light or background blur (f/3.5 vs f/4)
You need more reach: 55mm vs 20mm at the long end
You want bigger close-ups: 0.34× vs 0.15× maximum magnification

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

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

Spec differences

13 differences

Specifications that differ between the Pentax smc Pentax-DA 18-55mm f/3.5-5.6 AL and the Sigma 10-20mm f/4-5.6 EX DC HSM
	Pentax smc Pentax-DA 18-55mm f/3.5-5.6 AL	Sigma 10-20mm f/4-5.6 EX DC HSM
Brand	Pentax	Sigma
Type	Zoom	Wide Zoom
Focal length	18-55mm	10-20mm
Max aperture	f/3.5 ⅓ stop faster	f/4
Weight	220 g	not listed
Length	67.5 mm	not listed
Diameter	68 mm	not listed
Filter thread	52 mm	77 mm
Min focus distance	0.25 m	0.24 m closer
Max magnification	0.34× larger	0.15×
Optical design	11 elements / 8 groups	14 elements / 10 groups
Autofocus motor	not listed	HSM
Released	2008	not listed

4 identical specs hidden: mount, format, aperture blades, image stabilization. Show all

Mount: Pentax K both
Format: APS-C both
Aperture blades: 6 both
Image stabilization: No both

Our notes

Pentax smc Pentax-DA 18-55mm f/3.5-5.6 AL

A 18-55mm f/3.5-5.6 standard zoom lens, the Pentax smc Pentax-DA 18-55mm f/3.5-5.6 AL is designed for Pentax K mount bodies. A popular general-purpose zoom for Pentax APS-C cameras.

Our notes

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.