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
Help
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
Help
More than 10% smaller lens at the end
Slightly shorter 81 mm vs 91 mm
Help
More than 10% shorter
Slightly lighter 430 g vs 0.6 kg
Help
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-S 18-135mm f/3.5-5.6 IS STM

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

Travel lens

$279 - $399

Zoom range Significantly more zoom
Image stabilization Better image stabilization
Fixed aperture Has a variable aperture
Canon EF-S 17-55mm f/2.8 IS USM

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

Wide angle lens

$760 - $829

Image stabilization Better image stabilization
Zoom range Slightly more zoom
Lowest price Slightly more expensive
Canon EF-S 18-55mm f/3.5-5.6 IS II

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

Wide angle lens

$95 - $199

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

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

Canon EF 24-105mm f/4L IS USM

Canon EF 24-105mm f/4L IS USM

Wide angle lens

$592 - $999

Image stabilization Image stabilization
Zoom range More zoom
Wide minimum Significantly wider 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

$520 - $799

Image stabilization Image stabilization
Zoom range More zoom
Fixed aperture Has a variable aperture
Tamron 16-300mm f/3.5-6.3 Di II VC PZD MACRO Canon EF

Tamron 16-300mm f/3.5-6.3 Di II VC PZD MACRO Canon EF

Travel lens

$525 - $599

Zoom range Much more zoom
Image stabilization Image stabilization
Fixed aperture Has a variable aperture

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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