Sigma
18-50mm f/2.8 EX DC Macro
 vs
Canon
EF-S 17-55mm f/2.8 IS USM

vs

differences

Reasons to consider the Sigma 18-50mm f/2.8 EX DC Macro
LensHero is not aware of any important advantages of the Sigma 18-50mm f/2.8 EX DC Macro vs the Canon EF-S 17-55mm f/2.8 IS USM.
Sigma 18-50mm f/2.8 EX DC Macro Learn more about
the Sigma 18-50mm f/2.8 EX DC Macro

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
Slightly more zoom 3.2x vs 2.8x
Help
 Around 20% more zoom, giving you more flexibility for photos
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
Fixed aperture Constant aperture lenses Help
The same aperture at all focal lengths
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses
Max focal length Poor telephoto Help
18-50mm f/2.8 EX DC Macro:50 mm
EF-S 17-55mm f/2.8 IS USM:55 mm

Compared to portrait 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
Sigma 17-50mm f/2.8 EX DC OS HSM Canon-ef

Sigma 17-50mm f/2.8 EX DC OS HSM Canon-ef

Wide angle lens

$594
Compare the 17-50mm f/2.8 EX DC OS HSM Canon-ef vs the 18-50mm f/2.8 EX DC Macro
Compare the 17-50mm f/2.8 EX DC OS HSM Canon-ef 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
Aperture Has a narrower aperture
Compare the EF 17-40mm f/4L USM vs the 18-50mm f/2.8 EX DC Macro
Compare the EF 17-40mm f/4L 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

$196 - $199
Magnification Has better macro
Aperture Has a narrower aperture
Fixed aperture Has a variable aperture
Compare the EF-S 18-55mm f/3.5-5.6 IS vs the 18-50mm f/2.8 EX DC Macro
Compare the EF-S 18-55mm f/3.5-5.6 IS vs the EF-S 17-55mm f/2.8 IS USM
Sigma 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef

Sigma 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef

Wide angle lens

$499
Fixed aperture Has a variable aperture
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef vs the 18-50mm f/2.8 EX DC Macro
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Canon-ef vs the EF-S 17-55mm f/2.8 IS USM
Canon EF 16-35mm f/2.8L II USM

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

Fisheye lens

$1,699
Fisheye Is a fisheye lens
Compare the EF 16-35mm f/2.8L II USM vs the 18-50mm f/2.8 EX DC Macro
Compare the EF 16-35mm f/2.8L II USM vs the EF-S 17-55mm f/2.8 IS USM
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 Has a higher max f/stop
Compare the 17-50mm f/2.8 XR Di II LD Canon-ef vs the 18-50mm f/2.8 EX DC Macro
Compare the 17-50mm f/2.8 XR Di II LD Canon-ef vs the EF-S 17-55mm f/2.8 IS USM
Tamron SP 17-50mm f/2.8 XR Di-II VC LD Canon-ef

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

Wide angle lens

$499
Wide maximum Has a higher max f/stop
Compare the SP 17-50mm f/2.8 XR Di-II VC LD Canon-ef vs the 18-50mm f/2.8 EX DC Macro
Compare the SP 17-50mm f/2.8 XR Di-II VC LD Canon-ef vs the EF-S 17-55mm f/2.8 IS USM

Sigma 18-50mm f/2.8 EX DC Macro Competitors

Advantages

Disadvantages
Sigma 18-125mm f/3.8-5.6 DC OS HSM Canon-ef

Sigma 18-125mm f/3.8-5.6 DC OS HSM Canon-ef

Travel lens

$339
Focus motor Has a silent focus motor
Image stabilization Image stabilization
Fixed aperture Has a variable aperture
Aperture Narrower aperture
Compare the 18-125mm f/3.8-5.6 DC OS HSM Canon-ef vs the 18-50mm f/2.8 EX DC Macro
Olympus Zuiko 35mm f/3.5 Macro ED

Olympus Zuiko 35mm f/3.5 Macro ED

Macro lens

$229
Prime lens Is a prime lens
Aperture Narrower aperture
Zoom range Less zoom
Compare the Zuiko 35mm f/3.5 Macro ED vs the 18-50mm f/2.8 EX DC Macro
Pentax SMC DA 18-55mm f/3.5-5.6 AL II

Pentax SMC DA 18-55mm f/3.5-5.6 AL II

Wide angle lens
Fixed aperture Has a variable aperture
Aperture Narrower aperture
Compare the SMC DA 18-55mm f/3.5-5.6 AL II vs the 18-50mm f/2.8 EX DC Macro
Canon EF 15mm f/2.8

Canon EF 15mm f/2.8

Fisheye lens

$646
Fisheye Fisheye lens
Prime lens Is a prime lens
Zoom range Less zoom
Max focal length Slightly worse telephoto
Compare the EF 15mm f/2.8 vs the 18-50mm f/2.8 EX DC Macro
Sigma 17-70mm f/2.8-4.5 DC Macro

Sigma 17-70mm f/2.8-4.5 DC Macro

Portrait lens

$369
Zoom range More zoom
Max focal length Slightly better telephoto
Fixed aperture Has a variable aperture
Compare the 17-70mm f/2.8-4.5 DC Macro vs the 18-50mm f/2.8 EX DC Macro

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

Advantages

Disadvantages
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 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 50mm f/1.8 II

Canon EF 50mm f/1.8 II

Low light lens

$98 - $125
Prime lens Is a prime lens
Aperture Wider aperture
Image stabilization No image stabilization
Focus motor Doesn't have a silent focus motor
Compare the EF 50mm f/1.8 II vs the EF-S 17-55mm f/2.8 IS USM
Canon EF-S 18-135mm f/3.5-5.6 IS

Canon EF-S 18-135mm f/3.5-5.6 IS

Travel lens

$499 - $549
Zoom range Significantly more zoom
Max focal length Better telephoto
Fixed aperture Has a variable aperture
Focus motor Doesn't have a silent focus motor
Compare the EF-S 18-135mm f/3.5-5.6 IS vs the EF-S 17-55mm f/2.8 IS USM

discussion Which do you think is better?

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