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  Comparison # 101 
 
Lens Comparison

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

at 11mm.
Their widest focal lengths at F8
 
Comparison by Sinan Ozturk   
Both lenses were set to F8 and their widest focal length. This is 10mm for Sigma 10-20 and 11mm for Tokina 11-16. So this shows that 1mm difference between 2 lenses in close shot.

At this aperture I found the lenses' performance similiar. Sigma seems to have a little more contrast so its photo looking very slightly better to me. Their center sharpness performances looks similiar but due to more contrast Sigma looks a little more crisp in the center. On the other hand Tokina's corner/edge sharpness is better.

As we concluded in Comparison #52 [Tokina 11-16 vs Sigma 10-20], Sigma's corner performance peaks at F16 so in F8 its falling a little bit behind of Tokina.

Both shots are handheld.
            [Review by Sinan Ozturk]
  
  
  Comparison Photo # 1  
Photo_257Sigma 10-20mm. F/4-5.6  
against
Photo_256 Tokina 11-16mm f2.8
F8.0 1/250 100 10mm.    
  F8.0 1/320100 11mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Border (Top)
F/8.0
Brightness 165
(Almost Same)
Sigma 10-20mm. F/4-5.6
Around Center
F/8.0
Brightness 116
5% Darker
Sigma 10-20mm. F/4-5.6
Center
F/8.0
Brightness 100
(Almost Same)
Tokina 11-16mm f2.8
Border (Top)
F/8.0
Brightness 163
(Almost Same)
Tokina 11-16mm f2.8
Around Center
F/8.0
Brightness 128
5% Brighter
Tokina 11-16mm f2.8
Center
F/8.0
Brightness 102
(Almost Same)
Black & White crops are displayed for better details study.
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  EXIF  
 

 

 

  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
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. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8/F5, F6.3, F10/F11
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