Sigma 12-24mm f/4.5-5.6 Pentax-k vs 10mm f/2.8 EX DC HSM Canon-ef

differences

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

More zoom

2x more zoom, giving you more flexibility for photos

Learn more about
the Sigma 12-24mm f/4.5-5.6 Pentax-k

Reasons to consider the Sigma 10mm f/2.8 EX DC HSM Canon-ef

Fisheye lens

Yes

Fisheye lenses take extremely wide 'circular' looking images

Has a silent focus motor

Sigma HSM

None

Focuses quickly and silently

Is a prime lens

Yes

Prime lenses have a single focal length, they are typically sharper and have wider apertures

Significantly wider aperture

f/2.8

f/4.5

At its widest, the 10mm f/2.8 EX DC HSM Canon-ef captures slightly more light, 1.4 f-stops

More magnification

1:3.3 (0.3x)

1:7.1 (0.1x)

Take macro shots with subjects more than 2x larger in your photo

Slightly shorter

83 mm

100 mm

Around 20% shorter

Learn more about
the Sigma 10mm f/2.8 EX DC HSM Canon-ef

similarities

Compared to lenses

Common Strengths

Common Weaknesses

Good wide-angle

12-24mm f/4.5-5.6 Pentax-k:	12 mm
10mm f/2.8 EX DC HSM Canon-ef:	10 mm

Poor telephoto

12-24mm f/4.5-5.6 Pentax-k:	24 mm
10mm f/2.8 EX DC HSM Canon-ef:	10 mm

competitors

Tamron 14mm f/2.8 IF Nikon-f

Wide angle lens

$799

Compare the 14mm f/2.8 IF Nikon-f vs the 12-24mm f/4.5-5.6 Pentax-k

Compare the 14mm f/2.8 IF Nikon-f vs the 10mm f/2.8 EX DC HSM Canon-ef

Rokinon 8mm f/3.5 Nikon-f

Fisheye lens

$250

Has a narrower aperture

Lacks autofocus

Compare the 8mm f/3.5 Nikon-f vs the 12-24mm f/4.5-5.6 Pentax-k

Compare the 8mm f/3.5 Nikon-f vs the 10mm f/2.8 EX DC HSM Canon-ef

Nikon Nikkor 16mm f/2.8D

Fisheye lens

$750

Compare the Nikkor 16mm f/2.8D vs the 12-24mm f/4.5-5.6 Pentax-k

Compare the Nikkor 16mm f/2.8D vs the 10mm f/2.8 EX DC HSM Canon-ef

Canon EF 15mm f/2.8

Fisheye lens

$646

Compare the EF 15mm f/2.8 vs the 12-24mm f/4.5-5.6 Pentax-k

Compare the EF 15mm f/2.8 vs the 10mm f/2.8 EX DC HSM Canon-ef

Canon EF 8-15mm f/4L USM

Fisheye lens

$1,349

Has a fixed aperture

Has a narrower aperture

Compare the EF 8-15mm f/4L USM vs the 12-24mm f/4.5-5.6 Pentax-k

Compare the EF 8-15mm f/4L USM vs the 10mm f/2.8 EX DC HSM Canon-ef

Tokina 17-35mm f/4 Pro FX Nikon-f

Wide angle lens

$575

Has a fixed aperture

Has a narrower aperture

Compare the 17-35mm f/4 Pro FX Nikon-f vs the 12-24mm f/4.5-5.6 Pentax-k

Compare the 17-35mm f/4 Pro FX Nikon-f vs the 10mm f/2.8 EX DC HSM Canon-ef

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

Wide angle lens

$1,257

Image stabilization

Has a consant aperture

Slightly longer

Slightly more expensive

Compare the Nikkor AF-S 16-35mm f/4G ED VR vs the 12-24mm f/4.5-5.6 Pentax-k

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

Wide angle lens

$349

Is a prime lens

Significantly wider aperture

Auto focus

Less zoom

Compare the 14mm f/2.8 IF ED UMC Canon-ef vs the 12-24mm f/4.5-5.6 Pentax-k

Rokinon 8mm f/2.8 Samsung-nx

Fisheye lens

$349

Fisheye lens

Is a prime lens

Auto focus

Less zoom

Compare the 8mm f/2.8 Samsung-nx vs the 12-24mm f/4.5-5.6 Pentax-k

Pentax SMC DA 12-24mm f/4 ED AL

Wide angle lens

$897

Has a consant aperture

Wider aperture

Compare the SMC DA 12-24mm f/4 ED AL vs the 12-24mm f/4.5-5.6 Pentax-k

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

Wide angle lens

$759

Has a silent focus motor

Wider aperture

Compare the EF-S 10-22mm f/3.5-4.5 USM vs the 12-24mm f/4.5-5.6 Pentax-k

Sigma 15mm f/2.8 EX DG Canon-ef

Fisheye lens

$609

Slightly shorter

Doesn't have a silent focus motor

Slightly less magnification

Compare the 15mm f/2.8 EX DG Canon-ef vs the 10mm f/2.8 EX DC HSM Canon-ef

Samyang 8mm f/2.8 Fish-eye Samsung-nx

Wide angle lens

$349

Slightly cheaper

Not a fisheye

Doesn't have a silent focus motor

Compare the 8mm f/2.8 Fish-eye Samsung-nx vs the 10mm f/2.8 EX DC HSM Canon-ef

Rokinon 14mm f/2.8 IF ED MC Samsung-nx

Wide angle lens

$349

Slightly cheaper

Not a fisheye

Auto focus

Compare the 14mm f/2.8 IF ED MC Samsung-nx vs the 10mm f/2.8 EX DC HSM Canon-ef

Sigma 8mm f/3.5 EX DG Circular Canon-ef

Fisheye lens

$899

Slightly shorter

Doesn't have a silent focus motor

Narrower aperture

Compare the 8mm f/3.5 EX DG Circular Canon-ef vs the 10mm f/2.8 EX DC HSM Canon-ef

Lensbaby Scout Mount Fisheye Nikon-f

Fisheye lens

$250

Slightly shorter

Slightly cheaper

Much wider aperture

Doesn't have a silent focus motor

Compare the Scout Mount Fisheye Nikon-f vs the 10mm f/2.8 EX DC HSM Canon-ef

discussion Which do you think is better?

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Sigma
12-24mm f/4.5-5.6 Pentax-k
vs
Sigma
10mm f/2.8 EX DC HSM Canon-ef

differences

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

Reasons to consider the Sigma 10mm f/2.8 EX DC HSM Canon-ef