Tamron
17-50mm f/2.8 XR Di II LD Sony-alpha
 vs
Sigma
10-20mm f/4-5.6 EX DC Sony-alpha

vs

differences

Reasons to consider the Tamron 17-50mm f/2.8 XR Di II LD Sony-alpha
Has a consant aperture Yes vs No
Help
 Constant aperture lenses offer the same aperture at all focal lengths
Significantly narrower aperture f/32 vs f/22
Help
 At its narrowest, the 17-50mm f/2.8 XR Di II LD Sony-alpha goes 1.1 f-stops narrower
Wider aperture f/2.8 vs f/4
Help
 At its widest, the 17-50mm f/2.8 XR Di II LD Sony-alpha captures slightly more light, 1 f-stop
More zoom 2.9x vs 2x
Help
 Around 50% more zoom, giving you more flexibility for photos
Slightly more magnification 1:4.5 (0.2x) vs 1:6.7 (0.1x)
Help
 Take macro shots with subjects around 50% larger in your photo
Slightly better telephoto 50 mm vs 20 mm
Help
 2.5x more reach, less perspective distortion
Tamron 17-50mm f/2.8 XR Di II LD Sony-alpha Learn more about
the Tamron 17-50mm f/2.8 XR Di II LD Sony-alpha

Reasons to consider the Sigma 10-20mm f/4-5.6 EX DC Sony-alpha
LensHero is not aware of any important advantages of the Sigma 10-20mm f/4-5.6 EX DC Sony-alpha vs the Tamron 17-50mm f/2.8 XR Di II LD Sony-alpha.
Sigma 10-20mm f/4-5.6 EX DC Sony-alpha Learn more about
the Sigma 10-20mm f/4-5.6 EX DC Sony-alpha

similarities

Compared to lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses
Focus motor No silent focus motor Help
Louder and slower
Max focal length Poor telephoto Help
17-50mm f/2.8 XR Di II LD Sony-alpha:50 mm
10-20mm f/4-5.6 EX DC Sony-alpha:20 mm

Compared to wide angle lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.
Image stabilization No image stabilization Help
Risk of blur

competitors

Shared Competitors

Advantages

Disadvantages
Sony DT 35mm f/1.8 SAM

Sony DT 35mm f/1.8 SAM

Low light lens

$193 - $448
Aperture Has a wider aperture
Focus motor Has a silent focus motor
Compare the DT 35mm f/1.8 SAM vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
Compare the DT 35mm f/1.8 SAM vs the 10-20mm f/4-5.6 EX DC Sony-alpha
Sony Carl Zeiss Vario-Sonnar T* 16-80mm f/3.5-4.5 * DT

Sony Carl Zeiss Vario-Sonnar T* 16-80mm f/3.5-4.5 * DT

Wide angle lens

$998
Zoom range Has slightly large zoom range
Aperture Has a narrower aperture
Compare the Carl Zeiss Vario-Sonnar T* 16-80mm f/3.5-4.5 * DT vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
Compare the Carl Zeiss Vario-Sonnar T* 16-80mm f/3.5-4.5 * DT vs the 10-20mm f/4-5.6 EX DC Sony-alpha
Sigma 17-50mm f/2.8 EX DC OS HSM Sony-alpha

Sigma 17-50mm f/2.8 EX DC OS HSM Sony-alpha

Wide angle lens

$669
Image stabilization Has image stabilization
Focus motor Has a silent focus motor
Compare the 17-50mm f/2.8 EX DC OS HSM Sony-alpha vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
Compare the 17-50mm f/2.8 EX DC OS HSM Sony-alpha vs the 10-20mm f/4-5.6 EX DC Sony-alpha

Tamron 17-50mm f/2.8 XR Di II LD Sony-alpha Competitors

Advantages

Disadvantages
Sony 16-50mm f/2.8 Standard

Sony 16-50mm f/2.8 Standard

Wide angle lens

$700
Compare the 16-50mm f/2.8 Standard vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
Sigma 18-50mm f/2.8-4.5 DC OS HSM Sony-alpha

Sigma 18-50mm f/2.8-4.5 DC OS HSM Sony-alpha

Wide angle lens

$199
Focus motor Has a silent focus motor
Image stabilization Image stabilization
Fixed aperture Has a variable aperture
Wide maximum Significantly wider aperture
Compare the 18-50mm f/2.8-4.5 DC OS HSM Sony-alpha vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
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

$594
Focus motor Has a silent focus motor
Image stabilization Image stabilization
Wide maximum Significantly wider aperture
Weight Slightly heavier
Compare the 17-50mm f/2.8 EX DC OS HSM Nikon-f vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
Sony 18-55mm f/3.5-5.6 DT

Sony 18-55mm f/3.5-5.6 DT

Wide angle lens

$218
Weight Slightly lighter
Length Slightly shorter
Fixed aperture Has a variable aperture
Wide maximum Significantly wider aperture
Compare the 18-55mm f/3.5-5.6 DT vs the 17-50mm f/2.8 XR Di II LD Sony-alpha
Sony E-Mount 18-55mm f/3.5-5.6

Sony E-Mount 18-55mm f/3.5-5.6

Fisheye lens

$298
Fisheye Fisheye lens
Magnification Slightly more magnification
Fixed aperture Has a variable aperture
Aperture Narrower aperture
Compare the E-Mount 18-55mm f/3.5-5.6 vs the 17-50mm f/2.8 XR Di II LD Sony-alpha

Sigma 10-20mm f/4-5.6 EX DC Sony-alpha Competitors

Advantages

Disadvantages
Tamron SP 10-24mm f/3.5-4.5 DI II Sony-alpha

Tamron SP 10-24mm f/3.5-4.5 DI II Sony-alpha

Wide angle lens

$499
Aperture Wider aperture
Magnification Slightly more magnification
Wide maximum Much wider aperture
Compare the SP 10-24mm f/3.5-4.5 DI II Sony-alpha vs the 10-20mm f/4-5.6 EX DC Sony-alpha
Sony E-Mount 16mm f/2.8

Sony E-Mount 16mm f/2.8

Wide angle lens

$248
Prime lens Is a prime lens
Aperture Wider aperture
Zoom range Less zoom
Magnification Slightly less magnification
Compare the E-Mount 16mm f/2.8 vs the 10-20mm f/4-5.6 EX DC Sony-alpha
Panasonic Lumix G Vario 7-14mm f/4

Panasonic Lumix G Vario 7-14mm f/4

Wide angle lens

$959
Fixed aperture Has a consant aperture
Weight Slightly lighter
Magnification Slightly less magnification
Lowest price Slightly more expensive
Compare the Lumix G Vario 7-14mm f/4 vs the 10-20mm f/4-5.6 EX DC Sony-alpha
Sigma 12-24mm f/4.5-5.6 Sony-alpha

Sigma 12-24mm f/4.5-5.6 Sony-alpha

Wide angle lens

$859
Aperture Narrower aperture
Length Slightly longer
Compare the 12-24mm f/4.5-5.6 Sony-alpha vs the 10-20mm f/4-5.6 EX DC Sony-alpha
Sigma 12-24mm f/4.5-5.6 Canon-ef

Sigma 12-24mm f/4.5-5.6 Canon-ef

Wide angle lens

$859
Aperture Narrower aperture
Length Slightly longer
Compare the 12-24mm f/4.5-5.6 Canon-ef vs the 10-20mm f/4-5.6 EX DC Sony-alpha

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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