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Sigma 17-50mm F2.8 EX DC OS HSM Canon versus Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Canon

Scores and measurements are available only for tested lenses. For preview lenses, you can compare their specs.

Sigma 17-50mm F2.8 EX DC OS HSM Canon

DxOMark Score

Best at f=21mm & f/2.8[?]
16

Lens Metric Scores

Sharpness
[?]
8P-Mpix
Transmission
[?]
3.1TStop
Distortion
[?]
0.3%
Vignetting
[?]
-0.7EV
Chr. aberration
[?]
11µm
dxomark
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Canon

DxOMark Score

Best at f=24mm & f/2.8[?]
13

Lens Metric Scores

Sharpness
[?]
8P-Mpix
Transmission
[?]
3.4TStop
Distortion
[?]
0.3%
Vignetting
[?]
-0.7EV
Chr. aberration
[?]
4µm
dxomark
Sigma 17-50mm F2.8 EX DC OS HSM Canon
Announced2010-02-01 
Indicative price (USD) 669 
Aperturef/2.8  
Focal range (mm) 17 - 50  
Filter diameter (mm) 77 
Max diameter (mm) 83.5 
Mount typeCanon EF-S  
StabilizationOS  
AF MotorHSM  
Zoom typeRing  
Rotating front elementNo  
Tripod mountNo  
ColorBlack  
Full-Time manual focusNo  
Number of lenses17  
Number of groups13  
Diaphragm blades7  
Circular apertureNo  
Length (mm)91.8  
Weight (gr)565  

Certain fields may be left blank. They will be updated as soon as possible.
dxomark
Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical [IF] Canon
Announced2008-01-01 
Indicative price (USD) 459 
Aperturef/2.8  
Focal range (mm) 17 - 50  
Filter diameter (mm) 67 
Max diameter (mm) 73.8 
Mount typeCanon EF  
StabilizationNo  
AF MotorDC Motor  
Zoom typeRing  
Rotating front elementNo  
Tripod mountNo  
ColorBlack  
Full-Time manual focusNo  
Number of lenses16  
Number of groups13  
Diaphragm blades7  
Circular apertureyes  
Length (mm)83.2  
Weight (gr)430  

Certain fields may be left blank. They will be updated as soon as possible.
dxomark

in P-Mpix
Focal: 17 - 21 - 35 - 50
 
Focal: 17 - 24 - 35 - 50
 
Aperture: 0
 
Aperture: 0
 

in EV

in EV
Focal: 17 - 21 - 35 - 50
 
Focal: 17 - 24 - 35 - 50
 
Aperture: 2.8 - 5.6 - 8 - 11 - 22
 
Aperture: 2.8 - 3.5 - 5.6 - 8 - 11 - 32
 

in micrometer