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

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

$324 - $499

Wide minimum Significantly narrower aperture
Diameter Slightly smaller diameter
Canon EF 16-35mm f/2.8L II USM

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

Wide angle lens

$1,449

Image stabilization No image stabilization
Canon EF 17-40mm f/4L USM

Canon EF 17-40mm f/4L USM

Wide angle lens

$682 - $749

Image stabilization No image stabilization

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

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

$372 - $419

Image stabilization Image stabilization
Wide minimum Significantly wider aperture
Sigma 10mm f/2.8 EX DC HSM Canon EF

Sigma 10mm f/2.8 EX DC HSM Canon EF

Fisheye lens

$682

Fisheye Fisheye lens
Prime lens Is a prime lens
Wide minimum Significantly wider aperture
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

$399 - $499

Image stabilization Image stabilization
Zoom range More zoom
Wide minimum Much wider aperture

discussion Which do you think is better?

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