Sigma
10-20mm f/4-5.6 EX DC HSM Canon-ef
 vs
Pentax SMC
-DA 15mm f/4 ED AL

vs

differences

Reasons to consider the Sigma 10-20mm f/4-5.6 EX DC HSM Canon-ef
Has a silent focus motor Sigma HSM vs None
Help
 Focuses quickly and silently
More zoom 2x vs 1x
Help
 2x more zoom, giving you more flexibility for photos
Sigma 10-20mm f/4-5.6 EX DC HSM Canon-ef Learn more about
the Sigma 10-20mm f/4-5.6 EX DC HSM Canon-ef

Reasons to consider the Pentax -DA 15mm f/4 ED AL
Is a prime lens Yes vs No
Help
 Prime lenses have a single focal length, they are typically sharper and have wider apertures
Shorter 40 mm vs 81 mm
Help
 2x shorter
Slightly smaller diameter 63 mm vs 84 mm
Help
 Around 30% smaller lens at the end
Pentax SMC -DA 15mm f/4 ED AL Learn more about
the Pentax -DA 15mm f/4 ED AL

similarities

Compared to lenses

Common Strengths Common Weaknesses
Min focal length Good wide-angle Help
10-20mm f/4-5.6 EX DC HSM Canon-ef:10 mm
-DA 15mm f/4 ED AL:15 mm
Aperture Very narrow widest aperture size Help
f/4
Max focal length Poor telephoto Help
10-20mm f/4-5.6 EX DC HSM Canon-ef:20 mm
-DA 15mm f/4 ED AL:15 mm
Magnification Poor magnification Help
1:6.7 (0.1x)

Compared to wide angle lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.
Zoom range Poor zoom Help
10-20mm f/4-5.6 EX DC HSM Canon-ef:2x
-DA 15mm f/4 ED AL:1x
Image stabilization No image stabilization Help
Risk of blur

competitors

Shared Competitors

Advantages

Disadvantages
Sigma 24mm f/1.8 EX DG DF Macro Pentax-k

Sigma 24mm f/1.8 EX DG DF Macro Pentax-k

Low light lens

$449
Aperture Has a wider aperture
Magnification Has better macro
Compare the 24mm f/1.8 EX DG DF Macro Pentax-k vs the 10-20mm f/4-5.6 EX DC HSM Canon-ef
Compare the 24mm f/1.8 EX DG DF Macro Pentax-k vs the SMC -DA 15mm f/4 ED AL

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

Advantages

Disadvantages
Canon EF-S 10-22mm f/3.5-4.5 USM

Canon EF-S 10-22mm f/3.5-4.5 USM

Wide angle lens

$759
Wide maximum Narrower aperture
Aperture Wider aperture
Lowest price Slightly more expensive
Compare the EF-S 10-22mm f/3.5-4.5 USM vs the 10-20mm f/4-5.6 EX DC HSM Canon-ef
Tamron SP 10-24mm f/3.5-4.5 DI II Canon-ef

Tamron SP 10-24mm f/3.5-4.5 DI II Canon-ef

Wide angle lens

$499
Aperture Wider aperture
Magnification Slightly more magnification
Wide maximum Much wider aperture
Focus motor Doesn't have a silent focus motor
Compare the SP 10-24mm f/3.5-4.5 DI II Canon-ef vs the 10-20mm f/4-5.6 EX DC HSM Canon-ef
Sigma 8-16mm f/4.5-5.6 DC HSM Canon-ef

Sigma 8-16mm f/4.5-5.6 DC HSM Canon-ef

Wide angle lens

$649
Aperture Narrower aperture
Compare the 8-16mm f/4.5-5.6 DC HSM Canon-ef vs the 10-20mm f/4-5.6 EX DC HSM Canon-ef
Tokina 11-16mm f/2.8 AT-X 116 Pro DX Nikon-f

Tokina 11-16mm f/2.8 AT-X 116 Pro DX Nikon-f

Wide angle lens

$599
Fixed aperture Has a consant aperture
Aperture Wider aperture
Focus motor Doesn't have a silent focus motor
Magnification Slightly less magnification
Compare the 11-16mm f/2.8 AT-X 116 Pro DX Nikon-f vs the 10-20mm f/4-5.6 EX DC HSM Canon-ef
Tokina 11-16mm f/2.8 AT-X 116 Pro DX Canon-ef

Tokina 11-16mm f/2.8 AT-X 116 Pro DX Canon-ef

Wide angle lens

$599
Fixed aperture Has a consant aperture
Aperture Wider aperture
Focus motor Doesn't have a silent focus motor
Magnification Slightly less magnification
Compare the 11-16mm f/2.8 AT-X 116 Pro DX Canon-ef vs the 10-20mm f/4-5.6 EX DC HSM Canon-ef

Pentax SMC -DA 15mm f/4 ED AL Competitors

Advantages

Disadvantages
Pentax SMC DA 21mm f/3.2 AL

Pentax SMC DA 21mm f/3.2 AL

Lens

$647
Aperture Wider aperture
Length Slightly shorter
Compare the SMC DA 21mm f/3.2 AL vs the SMC -DA 15mm f/4 ED AL
Pentax SMC FA 43mm f/1.9

Pentax SMC FA 43mm f/1.9

Low light lens

$747
Aperture Much wider aperture
Max focal length Slightly better telephoto
Min focal length Slightly worse wide angle
Magnification Slightly less magnification
Compare the SMC FA 43mm f/1.9 vs the SMC -DA 15mm f/4 ED AL
Sigma 15mm f/2.8 EX DG Pentax-k

Sigma 15mm f/2.8 EX DG Pentax-k

Fisheye lens

$609
Fisheye Fisheye lens
Aperture Wider aperture
Length Slightly longer
Weight Slightly heavier
Compare the 15mm f/2.8 EX DG Pentax-k vs the SMC -DA 15mm f/4 ED AL
Pentax SMC DA 14mm f/2.8

Pentax SMC DA 14mm f/2.8

Wide angle lens

$947
Aperture Wider aperture
Magnification Slightly more magnification
Length Longer
Diameter Slightly larger diameter
Compare the SMC DA 14mm f/2.8 vs the SMC -DA 15mm f/4 ED AL
Pentax SMC FA 31mm f/1.8

Pentax SMC FA 31mm f/1.8

Low light lens

$1,297
Aperture Much wider aperture
Max focal length Slightly better telephoto
Length Longer
Lowest price Slightly more expensive
Compare the SMC FA 31mm f/1.8 vs the SMC -DA 15mm f/4 ED AL

discussion Which do you think is better?

Speech is free, but discussion at LensHero is moderated! Please discuss your opinion of these lenses here, and discuss feedback for LensHero at our support community.

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