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  Comparison # 89 
 
Lens Sharpness Comparison

Sigma 10-20 F4-5.6 vs. Tokina 11-16

Sharpness at 16mm.
Tested Apertures F2.8/F5, F6.3, F10/F11
 
Comparison by Sinan Ozturk   
Both lenses are set to 16mm for this test.

In the first comparison both lenses are in their widest aperture which is F2.8 for Tokina and F5.0 for Sigma. At this comparison Sigma seems to be doing better. Tokina has some vignetting and also softer in the corners while their center performance is close.

When they are both stopped down to F6.3, Tokina's vignetting improves and now Sigma's vignetting looks heavier especially in the corners. Yet its sharpness also looks a little better than Tokina, especially in the corners while centers looks very same.

Stopped down further, their performance gets more closer to eachother. Its not easy to decide which photo is better in the third comparison so I'll leave the decision to you.
            [Review by Sinan Ozturk]
  
  
  Comparison Photo # 1  
Photo_242Sigma 10-20mm. F/4-5.6  
against
Photo_239 Tokina 11-16mm f2.8
F5.0 1/25 100 16mm.    
  F2.8 1/125100 16mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Center
F/5.0
Brightness 158
8% Brighter
Sigma 10-20mm. F/4-5.6
Corner (Top Right)
F/5.0
Brightness 70
(Almost Same)
Sigma 10-20mm. F/4-5.6
Around Center
F/5.0
Brightness 125
5% Brighter
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.0
Brightness 71
9% Brighter
Tokina 11-16mm f2.8
Center
F/2.8
Brightness 137
8% Darker
Tokina 11-16mm f2.8
Corner (Top Right)
F/2.8
Brightness 78
(Almost Same)
Tokina 11-16mm f2.8
Around Center
F/2.8
Brightness 111
5% Darker
Tokina 11-16mm f2.8
Border (Left)
F/2.8
Brightness 48
9% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_243Sigma 10-20mm. F/4-5.6  
against
Photo_240 Tokina 11-16mm f2.8
F6.3 1/15 100 16mm.    
  F6.3 1/20100 16mm.  
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Center
F/6.3
Brightness 170
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Right)
F/6.3
Brightness 85
12% Darker
Sigma 10-20mm. F/4-5.6
Around Center
F/6.3
Brightness 143
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/6.3
Brightness 85
5% Brighter
Tokina 11-16mm f2.8
Center
F/6.3
Brightness 164
(Almost Same)
Tokina 11-16mm f2.8
Corner (Top Right)
F/6.3
Brightness 115
12% Brighter
Tokina 11-16mm f2.8
Around Center
F/6.3
Brightness 142
(Almost Same)
Tokina 11-16mm f2.8
Border (Left)
F/6.3
Brightness 71
5% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_244Sigma 10-20mm. F/4-5.6  
against
Photo_241 Tokina 11-16mm f2.8
F11.0 1/5 100 16mm.    
  F10.0 1/10100 16mm.  
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Center
F/11.0
Brightness 171
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Right)
F/11.0
Brightness 100
9% Darker
Sigma 10-20mm. F/4-5.6
Around Center
F/11.0
Brightness 147
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/11.0
Brightness 95
6% Brighter
Tokina 11-16mm f2.8
Center
F/10.0
Brightness 172
(Almost Same)
Tokina 11-16mm f2.8
Corner (Top Right)
F/10.0
Brightness 122
9% Brighter
Tokina 11-16mm f2.8
Around Center
F/10.0
Brightness 149
(Almost Same)
Tokina 11-16mm f2.8
Border (Left)
F/10.0
Brightness 78
6% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
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Related Comparisons
Tokina 11-16 vs. Sigma 10-20 F4-5.6
at 10-20mm.
How wide & narrow can Tokina 11-16 and Sigma 10-20 can go
Sigma 10-20 F4-5.6 vs. Sony 16-50
Sharpness at 16mm.
Tested Apertures F2.8/F5, F6.3, F10/F11
Sigma 10-20 F4-5.6 vs. Sony 16-105
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Tested Apertures F3.5/F5, F6.3, F11
Tokina 11-16 vs. Sony 16-105
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  Other Sigma 10-20mm. F/4-5.6 vs. Tokina 11-16mm f2.8 Comparisons  
Sigma 10-20 F4-5.6 vs. Tokina 11-16
at 16mm.
F2.8 and F8
Sigma 10-20 F4-5.6 vs. Tokina 11-16
Sharpness at 11mm.
Tested Apertures F2.8/F4.5, F5.6, F9, F9/F11
Sigma 10-20 F4-5.6 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8/F5, F5.6, F11
Tokina 11-16 vs. Sigma 10-20 F4-5.6
Sharpness at 11mm.
Tested Apertures F2.8/F4.5, F5.6, F11, F11
Sigma 10-20 F4-5.6 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8/F5, F5.6, F8, F16
Sigma 10-20 F4-5.6 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8/F5, F3.5/F5, F5.6, F8, F11
Sigma 10-20 F4-5.6 vs. Tokina 11-16
at 11mm.
Their widest focal lengths at F8
Tokina 11-16 vs. Sigma 10-20 F4-5.6
at 10-16mm.
Sigma 10mm vs. Tokina 11mm & Sigma 20mm vs. Tokina 16mm - Point of view comparison
Tokina 11-16 vs. Sigma 10-20 F4-5.6
Sharpness at 11mm.
Tested Apertures F2.8/F4.5, F4.5, F5.6, F6.3, F8, F16
  Other Comparisons of Sigma 10-20mm. F/4-5.6  
Sigma 10-20 F4-5.6 vs. Vivitar 13mm 2.8
Sharpness at 13mm.
Tested Apertures F2.8/F4.5, F4/F4.5, F5.6, F8, F11, F16, F22
Sigma 12-24 vs. Sigma 10-20 F4-5.6
Sharpness at 13mm.
Tested Apertures F4.5, F5.6, F8, F11, F16, F22
Sigma 10-20 F4-5.6 vs. Sigma 12-24
Sharpness at 12mm.
Tested Apertures F4.5, F8, F16
Sigma 10-20 F4-5.6 vs. Vivitar 13mm 2.8
Sharpness at 13mm.
Tested Apertures F2.8/F5, F4/F5, F5.6, F8, F11, F16, F16/F22
Sigma 12-24 vs. Sigma 10-20 F4-5.6
Sharpness at 13mm.
Tested Apertures F5, F5.6, F8, F11, F16, F16/F22
Sigma 10-20 F4-5.6 vs. Samsung 18-55
Sharpness at 18mm.
Tested Apertures F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Sigma 10-20 F4-5.6 vs. Sony E.16-50
Sharpness at 18mm.
Tested Apertures F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Sony 18-200 vs. Sigma 10-20 F4-5.6
Sharpness at 18mm.
Tested Apertures F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Tamron 18-200 vs. Sigma 10-20 F4-5.6
Sharpness at 18mm.
Tested Apertures F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Tamron 17-50 vs. Sigma 10-20 F4-5.6
Sharpness at 18mm.
Tested Apertures F2.8/F5.6, F3.2/F5.6, F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Sony 16-105 vs. Sigma 10-20 F4-5.6
Sharpness at 18mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Sony 16-50 vs. Sigma 10-20 F4-5.6
Sharpness at 18mm.
Tested Apertures F2.8/F5.6, F3.2/F5.6, F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Sony 18-55 vs. Sigma 10-20 F4-5.6
Sharpness at 18mm.
Tested Apertures F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10
Sigma 10-20 F4-5.6 vs. Sony E.16-50
Sharpness at 16mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F8
Sigma 10-20 F4-5.6 vs. Sony 16-50
Sharpness at 16mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F8
Sigma 10-20 F4-5.6 vs. Sony 16-105
Sharpness at 16mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F8
Sigma 10-20 F4-5.6 Sharpness Test at 20mm.
at 20mm.
Tested Apertures Between F5.6 to F13.0
Sigma 10-20 F4-5.6 Sharpness Test at 10mm.
at 10mm.
Tested Apertures Between F4.0 to F13.0
Sigma 10-20 vs. Sigma 12-24
at 10-12mm.
Wide Angle Video Shot