differences

Reasons to consider the Tamron 17-50mm f/2.8 XR Di II LD Canon EF

Significantly narrower aperture f/32 vs f/22
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At its narrowest, the 17-50mm f/2.8 XR Di II LD Canon EF goes 1.1 f-stops narrower
Smaller diameter 74 mm vs 84 mm
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More than 10% smaller lens at the end
Slightly shorter 81 mm vs 91 mm
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More than 10% shorter
Slightly lighter 430 g vs 0.6 kg
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More than 20% lighter
Tamron 17-50mm f/2.8 XR Di II LD Canon EF Learn more about
the Tamron 17-50mm f/2.8 XR Di II LD Canon EF

Reasons to consider the Sigma 17-50mm f/2.8 EX DC OS HSM Canon EF

Image stabilization Sigma OS vs None
Help
Helps eliminate blur caused by small camera movements
Sigma 17-50mm f/2.8 EX DC OS HSM Canon EF Learn more about
the Sigma 17-50mm f/2.8 EX DC OS HSM Canon EF

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

Compared to digital camera lenses

Common Strengths Common Weaknesses
Wide minimum Wide aperture Help
17-50mm f/2.8 XR Di II LD Canon EFf/32
17-50mm f/2.8 EX DC OS HSM Canon EFf/22

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

competitors

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

Canon EF 17-40mm f/4L USM

Canon EF 17-40mm f/4L USM

Wide angle lens

$630 - $849

Image stabilization No image stabilization
Canon 18-55mm f/3.5-5.6 IS STM

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

Wide angle lens

$199 - $249

Image stabilization Better image stabilization
Diameter Smaller diameter
Fixed aperture Has a variable aperture
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

$569 - $799

Zoom range More zoom
Image stabilization Better image stabilization
Fixed aperture Has a variable aperture

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

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

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

Travel lens

$289 - $400

Image stabilization Image stabilization
Zoom range Significantly more zoom
Fixed aperture Has a variable aperture
Placeholder

Tamron SP 15-30mm f/2.8 Di VC USD Canon-ef

Wide angle lens

$889 - $1,199

Image stabilization Image stabilization
Wide minimum Significantly wider aperture
Canon EF 16-35mm f/2.8L II USM

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

Wide angle lens

$100 - $1,299

Wide minimum Significantly wider aperture

discussion Which do you think is better?

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