Sigma
20mm f/1.8 EX DG DF RF Nikon-f
 vs
Canon
EF-S 17-55mm f/2.8 IS USM

vs

differences

Reasons to consider the Sigma 20mm f/1.8 EX DG DF RF Nikon-f
Is a prime lens Yes vs No
Help
 Prime lenses have a single focal length, they are typically sharper and have wider apertures
Wider aperture f/1.8 vs f/2.8
Help
 At its widest, the 20mm f/1.8 EX DG DF RF Nikon-f captures much more light, 1.3 f-stops
More magnification 1:4 (0.2x) vs 1:6 (0.2x)
Help
 Take macro shots with subjects around 50% larger in your photo
Slightly shorter 86 mm vs 110 mm
Help
 More than 20% shorter
Slightly cheaper $629.00 vs $1,179.00
Help
 The best price we've seen is $550 cheaper (around 50% less)
Sigma 20mm f/1.8 EX DG DF RF Nikon-f Learn more about
the Sigma 20mm f/1.8 EX DG DF RF Nikon-f

Reasons to consider the Canon EF-S 17-55mm f/2.8 IS USM
Image stabilization Canon IS vs None
Help
 Helps eliminate blur caused by small camera movements
Has a silent focus motor Canon USM vs None
Help
 Focuses quickly and silently
More zoom 3.2x vs 1x
Help
 More than 3x more zoom, giving you more flexibility for photos
Slightly better telephoto 55 mm vs 20 mm
Help
 Around 3x more reach, less perspective distortion
Canon EF-S 17-55mm f/2.8 IS USM Learn more about
the Canon EF-S 17-55mm f/2.8 IS USM

similarities

Compared to lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.
Max focal length Poor telephoto Help
20mm f/1.8 EX DG DF RF Nikon-f:20 mm
EF-S 17-55mm f/2.8 IS USM:55 mm

Compared to wide angle lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.

LensHero is not aware of any interesting weaknesses shared by these two products.

competitors

Shared Competitors

Advantages

Disadvantages
Canon EF 16-35mm f/2.8L II USM

Canon EF 16-35mm f/2.8L II USM

Fisheye lens

$1,499
Fisheye Is a fisheye lens
Aperture Has a narrower aperture
Compare the EF 16-35mm f/2.8L II USM vs the 20mm f/1.8 EX DG DF RF Nikon-f
Compare the EF 16-35mm f/2.8L II USM vs the EF-S 17-55mm f/2.8 IS USM
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 Has a higher max f/stop
Aperture Has a narrower aperture
Fixed aperture Has a variable aperture
Compare the EF-S 10-22mm f/3.5-4.5 USM vs the 20mm f/1.8 EX DG DF RF Nikon-f
Compare the EF-S 10-22mm f/3.5-4.5 USM vs the EF-S 17-55mm f/2.8 IS USM

Sigma 20mm f/1.8 EX DG DF RF Nikon-f Competitors

Advantages

Disadvantages
Zeiss Distagon T* 21mm f/2.8 ZF.2 Nikon-f

Zeiss Distagon T* 21mm f/2.8 ZF.2 Nikon-f

Wide angle lens

$1,843
Auto focus Auto focus
Aperture Narrower aperture
Compare the Distagon T* 21mm f/2.8 ZF.2 Nikon-f vs the 20mm f/1.8 EX DG DF RF Nikon-f
Zeiss Distagon 21mm f/2.8 ZF T* Nikon-f

Zeiss Distagon 21mm f/2.8 ZF T* Nikon-f

Wide angle lens

$1,490
Auto focus Auto focus
Aperture Narrower aperture
Compare the Distagon 21mm f/2.8 ZF T* Nikon-f vs the 20mm f/1.8 EX DG DF RF Nikon-f
Tamron 14mm f/2.8 IF Nikon-f

Tamron 14mm f/2.8 IF Nikon-f

Wide angle lens

$799
Aperture Narrower aperture
Magnification Less magnification
Compare the 14mm f/2.8 IF Nikon-f vs the 20mm f/1.8 EX DG DF RF Nikon-f
Sigma 24mm f/1.8 EX DG DF Macro Nikon-f

Sigma 24mm f/1.8 EX DG DF Macro Nikon-f

Low light lens

$549
Magnification More magnification
Compare the 24mm f/1.8 EX DG DF Macro Nikon-f vs the 20mm f/1.8 EX DG DF RF Nikon-f
Rokinon 14mm f/2.8 IF ED UMC Canon-ef

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

Wide angle lens

$349
Lowest price Slightly cheaper
Auto focus Auto focus
Aperture Narrower aperture
Compare the 14mm f/2.8 IF ED UMC Canon-ef vs the 20mm f/1.8 EX DG DF RF Nikon-f

Canon EF-S 17-55mm f/2.8 IS USM Competitors

Advantages

Disadvantages
Tamron 17-50mm f/2.8 XR Di II LD Canon-ef

Tamron 17-50mm f/2.8 XR Di II LD Canon-ef

Wide angle lens

$459
Wide maximum Significantly narrower aperture
Length Shorter
Image stabilization No image stabilization
Focus motor Doesn't have a silent focus motor
Compare the 17-50mm f/2.8 XR Di II LD Canon-ef vs the EF-S 17-55mm f/2.8 IS USM
Canon EF 24-70mm f/2.8L USM

Canon EF 24-70mm f/2.8L USM

Wide angle lens

$1,280
Magnification More magnification
Max focal length Slightly better telephoto
Image stabilization No image stabilization
Weight Slightly heavier
Compare the EF 24-70mm f/2.8L USM vs the EF-S 17-55mm f/2.8 IS USM
Canon EF 17-40mm f/4L USM

Canon EF 17-40mm f/4L USM

Wide angle lens

$739
Magnification More magnification
Lowest price Slightly cheaper
Image stabilization No image stabilization
Aperture Narrower aperture
Compare the EF 17-40mm f/4L USM vs the EF-S 17-55mm f/2.8 IS USM
Canon EF-S 15-85mm f/3.5-5.6 IS USM

Canon EF-S 15-85mm f/3.5-5.6 IS USM

Travel lens

$699
Zoom range More zoom
Max focal length Slightly better telephoto
Fixed aperture Has a variable aperture
Aperture Narrower aperture
Compare the EF-S 15-85mm f/3.5-5.6 IS USM vs the EF-S 17-55mm f/2.8 IS USM
Canon EF-S 18-55mm f/3.5-5.6 IS

Canon EF-S 18-55mm f/3.5-5.6 IS

Wide angle lens

$199
Magnification More magnification
Length Shorter
Fixed aperture Has a variable aperture
Focus motor Doesn't have a silent focus motor
Compare the EF-S 18-55mm f/3.5-5.6 IS vs the EF-S 17-55mm f/2.8 IS USM

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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