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  Comparison # 107 
 
Lens Sharpness Comparison

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
 
Comparison by Sinan Ozturk   
Sigma can't go wider than F5 at 16mm so in the first 2 comparions, it is at F5 against Tokina's F2.8 and F3.5. In these comparisons Sigma looks just a tad sharper, on the other hand it seems to have more vignetting especially in comparison to F3.5 at Tokina.

When both stopped down to F5.6, Tokina seems to be doing better.

At F8, their center performance is very close but Tokina looks better in the corners. AT F11, Sigma has a little more contrast but Tokina is still just a tad sharper in the corners.
            [Review by Sinan Ozturk]
  
  
  Comparison Photo # 1  
Photo_265Tokina 11-16mm f2.8  
against
Photo_278 Sigma 10-20mm. F/4-5.6
F2.8 1/2500 100 16mm.    
  F5.0 1/800100 16mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Tokina 11-16mm f2.8
Focus Point
F/2.8
Brightness 172
(Almost Same)
Tokina 11-16mm f2.8
Border (Left)
F/2.8
Brightness 111
(Almost Same)
Tokina 11-16mm f2.8
Around Center
F/2.8
Brightness 80
(Almost Same)
Tokina 11-16mm f2.8
Corner (Top Left)
F/2.8
Brightness 91
9% Brighter
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.0
Brightness 182
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.0
Brightness 102
(Almost Same)
Sigma 10-20mm. F/4-5.6
Around Center
F/5.0
Brightness 78
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.0
Brightness 70
9% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_266Tokina 11-16mm f2.8  
against
Photo_278 Sigma 10-20mm. F/4-5.6
F3.5 1/1600 100 16mm.    
  F5.0 1/800100 16mm.  
100% (1:1) Crop Samples
Tokina 11-16mm f2.8
Focus Point
F/3.5
Brightness 193
5% Brighter
Tokina 11-16mm f2.8
Border (Left)
F/3.5
Brightness 141
15% Brighter
Tokina 11-16mm f2.8
Around Center
F/3.5
Brightness 107
11% Brighter
Tokina 11-16mm f2.8
Corner (Top Left)
F/3.5
Brightness 118
19% Brighter
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.0
Brightness 182
5% Darker
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.0
Brightness 102
15% Darker
Sigma 10-20mm. F/4-5.6
Around Center
F/5.0
Brightness 78
11% Darker
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.0
Brightness 70
19% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_267Tokina 11-16mm f2.8  
against
Photo_280 Sigma 10-20mm. F/4-5.6
F5.6 1/640 100 16mm.    
  F5.6 1/640100 16mm.  
100% (1:1) Crop Samples
Tokina 11-16mm f2.8
Focus Point
F/5.6
Brightness 194
(Almost Same)
Tokina 11-16mm f2.8
Border (Left)
F/5.6
Brightness 150
14% Brighter
Tokina 11-16mm f2.8
Around Center
F/5.6
Brightness 113
9% Brighter
Tokina 11-16mm f2.8
Corner (Top Left)
F/5.6
Brightness 125
18% Brighter
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.6
Brightness 190
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.6
Brightness 114
14% Darker
Sigma 10-20mm. F/4-5.6
Around Center
F/5.6
Brightness 90
9% Darker
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.6
Brightness 79
18% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_269Tokina 11-16mm f2.8  
against
Photo_281 Sigma 10-20mm. F/4-5.6
F8.0 1/320 100 16mm.    
  F8.0 1/320100 16mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Tokina 11-16mm f2.8 F/8.0 vs. Sigma 10-20mm. F/4-5.6 F/8.0 for locations Focus Point, Border (Left), Around Center, Corner (Top Left)
  EXIF  
 
  Comparison Photo # 5  
Photo_268Tokina 11-16mm f2.8  
against
Photo_282 Sigma 10-20mm. F/4-5.6
F11.0 1/160 100 16mm.    
  F11.0 1/160100 16mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Tokina 11-16mm f2.8 F/11.0 vs. Sigma 10-20mm. F/4-5.6 F/11.0 for locations Focus Point, Border (Left), Around Center, Corner (Top Left)
  EXIF  
 
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  Other Sigma 10-20mm. F/4-5.6 vs. Tokina 11-16mm f2.8 Comparisons  
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Tested Apertures F2.8/F4.5, F5.6, F11, F11
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Tokina 11-16 vs. Sigma 10-20 F4-5.6
at 10-20mm.
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Sharpness at 16mm.
Tested Apertures F2.8/F5, F6.3, F10/F11
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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.
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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
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Wide Angle Video Shot