differences

Reasons to consider the Sigma 18-35mm f/1.8 DC HSM

Wider aperture f/1.8 vs f/2.8
Help
At its widest, the 18-35mm f/1.8 DC HSM captures much more light (1.3 f-stops)
Slightly smaller diameter 78 mm vs 84 mm
Help
Around 10% smaller lens at the end
Sigma 18-35mm f/1.8 DC HSM Learn more about
the Sigma 18-35mm f/1.8 DC HSM

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
Narrower aperture f/22 vs f/16
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At its narrowest, the EF-S 17-55mm f/2.8 IS USM goes 0.9 f-stops narrower
More zoom 3.2x vs 1.9x
Help
Around 70% more zoom, giving you more flexibility for photos
Slightly lighter 0.6 kg vs 0.8 kg
Help
More than 20% lighter
Slightly better telephoto 55 mm vs 35 mm
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Around 60% more reach, less perspective distortion
Slightly shorter 112 mm vs 121 mm
Help
Around 10% shorter
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 digital camera lenses

Common Strengths Common Weaknesses
Fixed aperture Constant aperture lenses Help
The same maximum aperture at all focal lengths
Auto focus Auto focus Help
Easier to use
Lowest price Inexpensive Help
18-35mm f/1.8 DC HSM$69.50
EF-S 17-55mm f/2.8 IS USM$99.50
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses

competitors

Sigma 18-35mm f/1.8 DC HSM Competitors

Canon EF 24-70mm f/2.8L II USM

Canon EF 24-70mm f/2.8L II USM

Wide angle lens

$1,445 - $1,699

Wide minimum Narrower aperture
Zoom range More zoom
Lowest price More expensive
Olympus Zuiko M. ED 12-40mm f/2.8 PRO

Olympus Zuiko M. ED 12-40mm f/2.8 PRO

Wide angle lens

$999

Wide minimum Narrower aperture
Zoom range More zoom
Aperture Narrower aperture
Sigma 17-50mm f/2.8 EX DC OS HSM Nikon F

Sigma 17-50mm f/2.8 EX DC OS HSM Nikon F

Wide angle lens

$282 - $294

Image stabilization Image stabilization
Wide minimum Narrower aperture
Aperture Narrower aperture

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

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

$579 - $799

Zoom range More zoom
Length Slightly shorter
Fixed aperture Has a variable aperture
Canon EF 17-40mm f/4L USM

Canon EF 17-40mm f/4L USM

Wide angle lens

$100 - $899

Length Slightly shorter
Weight Slightly lighter
Image stabilization No image stabilization
Canon EF-M 18-55mm f/3.5-5.6 IS STM

Canon EF-M 18-55mm f/3.5-5.6 IS STM

Portrait lens

$299

Diameter Smaller diameter
Length Shorter
Fixed aperture Has a variable aperture

discussion Which do you think is better?

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