vs

differences

Reasons to consider the Sigma 12-24mm f/4.5-5.6 Pentax-k

More zoom 2x vs 1x
Help
2x more zoom, giving you more flexibility for photos
Sigma 12-24mm f/4.5-5.6 Pentax-k Learn more about
the Sigma 12-24mm f/4.5-5.6 Pentax-k

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 100 mm
Help
2.5x shorter
Wider aperture f/4 vs f/4.5
Help
At its widest, the -DA 15mm f/4 ED AL captures marginally more light, 0.3 f-stops
Lighter 212 g vs 0.6 kg
Help
2.9x lighter
Slightly smaller diameter 63 mm vs 87 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
12-24mm f/4.5-5.6 Pentax-k:12 mm
-DA 15mm f/4 ED AL:15 mm
Aperture Very narrow widest aperture size Help
12-24mm f/4.5-5.6 Pentax-k:f/4.5
-DA 15mm f/4 ED AL:f/4
Max focal length Poor telephoto Help
12-24mm f/4.5-5.6 Pentax-k:24 mm
-DA 15mm f/4 ED AL:15 mm
Focus motor No silent focus motor Help
Louder and slower
Magnification Poor magnification Help
12-24mm f/4.5-5.6 Pentax-k:1:7.1 (0.1x)
-DA 15mm f/4 ED AL: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
12-24mm f/4.5-5.6 Pentax-k:2x
-DA 15mm f/4 ED AL:1x
Image stabilization No image stabilization Help
Risk of blur

competitors

Shared Competitors

Advantages

Disadvantages

Rokinon 14mm f/2.8 IF ED UMC Canon-ef

Rokinon 14mm f/2.8 IF ED UMC Canon-ef

Wide angle lens

$349

Aperture Has a wider aperture
Auto focus Lacks autofocus
Sigma 10-20mm f/4-5.6 EX DC Pentax-k

Sigma 10-20mm f/4-5.6 EX DC Pentax-k

Wide angle lens

$479

Sigma 24mm f/1.8 EX DG DF Macro Four-thirds

Sigma 24mm f/1.8 EX DG DF Macro Four-thirds

Low light lens

$449

Aperture Has a wider aperture
Magnification Has better macro
Pentax SMC  DA 16-45mm f/4 ED AL

Pentax SMC DA 16-45mm f/4 ED AL

Wide angle lens

$600

Fixed aperture Has a fixed aperture
Length Is longer

Sigma 12-24mm f/4.5-5.6 Pentax-k Competitors

Advantages

Disadvantages

Rokinon 8mm f/2.8 Samsung-nx

Rokinon 8mm f/2.8 Samsung-nx

Fisheye lens

$349

Fisheye Fisheye lens
Prime lens Is a prime lens
Auto focus Auto focus
Zoom range Less zoom
Rokinon 8mm f/3.5 Nikon-f

Rokinon 8mm f/3.5 Nikon-f

Fisheye lens

$250

Fisheye Fisheye lens
Prime lens Is a prime lens
Auto focus Auto focus
Zoom range Less zoom
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

Focus motor Has a silent focus motor
Aperture Wider aperture
Sigma 8-16mm f/4.5-5.6 DC HSM Pentax-k

Sigma 8-16mm f/4.5-5.6 DC HSM Pentax-k

Wide angle lens

$699

Focus motor Has a silent focus motor
Nikon Nikkor AF-S 16-35mm f/4G ED VR

Nikon Nikkor AF-S 16-35mm f/4G ED VR

Wide angle lens

$1,257

Image stabilization Image stabilization
Fixed aperture Has a consant aperture
Length Slightly longer
Lowest price Slightly more expensive

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
Zeiss 21mm f/2.8 ZM Leica-m

Zeiss 21mm f/2.8 ZM Leica-m

Wide angle lens

$1,428

Aperture Wider aperture
Auto focus Auto focus
Magnification Less magnification
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
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
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

discussion Which do you think is better?

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