differences

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

Wider aperture f/1.8 vs f/2.8
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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
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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
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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
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Around 70% more zoom, giving you more flexibility for photos
Slightly lighter 0.6 kg vs 0.8 kg
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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
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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
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses

competitors

Sigma 18-35mm f/1.8 DC HSM Competitors

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Nikon Nikkor AF-S DX 16-80mm f/2.8-4E ED VR

Wide angle lens

$767 - $799

Image stabilization Image stabilization
Zoom range More zoom
Fixed aperture Has a variable aperture
Sigma 24mm f/1.4 DG HSM Art Nikon F

Sigma 24mm f/1.4 DG HSM Art Nikon F

Low light lens

$734 - $849

Prime lens Is a prime lens
Length Shorter
Zoom range Less zoom
Canon EF 24-70mm f/2.8L II USM

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

Wide angle lens

$1,549 - $1,699

Wide minimum Narrower aperture
Zoom range More zoom
Aperture Narrower aperture

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

Canon EF 35mm f/1.4L USM

Canon EF 35mm f/1.4L USM

Low light lens

$1,298 - $1,699

Prime lens Is a prime lens
Aperture Significantly wider aperture
Image stabilization No image stabilization
Canon EF 16-35mm f/2.8L II USM

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

Wide angle lens

$1,999

Image stabilization No image stabilization
Canon EF 50mm f/1.8 II

Canon EF 50mm f/1.8 II

Low light lens

$60

Prime lens Is a prime lens
Length Shorter
Image stabilization No image stabilization

discussion Which do you think is better?

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