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  Comparison # 52 
 
Lens Sharpness 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
 
Comparison by Sinan Ozturk   
Sigma 10-20 can get as wide as 10mm but to get the exact point of view with Tokina 11-16, both lenses were set at 11mm.

At 11mm Sigma's widest aperture is F4.5 so in the first comparison, its compared to Tokina's widest aperture which is F2.8.

In the second photo, both lenses were at F4.5.

Then they are stopped down to F5.6, F6.3, F8 and F16 which is a common aperture in wide angle lenses.

All photos were taken with the same camera (Sony Alpha A-35) and with tripod + remote control.

I don't know if you'd agree with me but Sigma 10-20 is pretty interesting lens. Its significantly softer than Tokina 11-16 in wide apertures. One can even say its not sharp enough until you stop it down to F8. At F8, its as sharp as Tokina in the center but its still softer in the corners. However very untraditionally when you stop it down to F16, it becomes as sharp both in corners and in the center. Even at F16 Tokina has a little edge in corner sharpness but is very insignificant and I guess we are safe to say they are identically sharp.

F16's being a lens sweet spot is very uncommon so hopefully you'll agree that its interesting enough. :)
            [Review by Sinan Ozturk]
  
  
  Comparison Photo # 1  
Photo_137Tokina 11-16mm f2.8  
against
Photo_131 Sigma 10-20mm. F/4-5.6
F2.8 1/2000 100 11mm.    
  F4.5 1/800100 11mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Tokina 11-16mm f2.8
Focus Point
F/2.8
Brightness 88
(Almost Same)
Tokina 11-16mm f2.8
Corner (Top Left)
F/2.8
Brightness 157
(Almost Same)
Tokina 11-16mm f2.8
Center
F/2.8
Brightness 188
(Almost Same)
Sigma 10-20mm. F/4-5.6
Focus Point
F/4.5
Brightness 95
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/4.5
Brightness 150
(Almost Same)
Sigma 10-20mm. F/4-5.6
Center
F/4.5
Brightness 192
(Almost Same)
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_138Tokina 11-16mm f2.8  
against
Photo_131 Sigma 10-20mm. F/4-5.6
F4.5 1/800 100 11mm.    
  F4.5 1/800100 11mm.  
100% (1:1) Crop Samples
Tokina 11-16mm f2.8
Focus Point
F/4.5
Brightness 103
(Almost Same)
Tokina 11-16mm f2.8
Corner (Top Left)
F/4.5
Brightness 194
17% Brighter
Tokina 11-16mm f2.8
Center
F/4.5
Brightness 199
(Almost Same)
Sigma 10-20mm. F/4-5.6
Focus Point
F/4.5
Brightness 95
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/4.5
Brightness 150
17% Darker
Sigma 10-20mm. F/4-5.6
Center
F/4.5
Brightness 192
(Almost Same)
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_139Tokina 11-16mm f2.8  
against
Photo_136 Sigma 10-20mm. F/4-5.6
F5.6 1/500 100 11mm.    
  F5.6 1/500100 11mm.  
100% (1:1) Crop Samples
Tokina 11-16mm f2.8
Focus Point
F/5.6
Brightness 100
(Almost Same)
Tokina 11-16mm f2.8
Corner (Top Left)
F/5.6
Brightness 191
8% Brighter
Tokina 11-16mm f2.8
Center
F/5.6
Brightness 197
(Almost Same)
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.6
Brightness 108
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.6
Brightness 170
8% Darker
Sigma 10-20mm. F/4-5.6
Center
F/5.6
Brightness 202
(Almost Same)
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 4  
Photo_140Tokina 11-16mm f2.8  
against
Photo_135 Sigma 10-20mm. F/4-5.6
F6.3 1/400 100 11mm.    
  F6.3 1/400100 11mm.  
100% (1:1) Crop Samples
Login or Register to display 3 crops from Tokina 11-16mm f2.8 F/6.3 vs. Sigma 10-20mm. F/4-5.6 F/6.3 for locations Focus Point, Corner (Top Left), Center
  EXIF  
 
  Comparison Photo # 5  
Photo_141Tokina 11-16mm f2.8  
against
Photo_134 Sigma 10-20mm. F/4-5.6
F8.0 1/250 100 11mm.    
  F8.0 1/250100 11mm.  
100% (1:1) Crop Samples
Login or Register to display 3 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, Corner (Top Left), Center
  EXIF  
 
  Comparison Photo # 6  
Photo_142Tokina 11-16mm f2.8  
against
Photo_133 Sigma 10-20mm. F/4-5.6
F16.0 1/60 100 11mm.    
  F16.0 1/60100 11mm.  
100% (1:1) Crop Samples
Login or Register to display 3 crops from Tokina 11-16mm f2.8 F/16.0 vs. Sigma 10-20mm. F/4-5.6 F/16.0 for locations Focus Point, Corner (Top Left), Center
  EXIF  
 
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  Other Tokina 11-16mm f2.8 vs. Sigma 10-20mm. F/4-5.6 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 10-20mm.
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
  Other Comparisons of Tokina 11-16mm f2.8  
Tokina 11-16 Distortion Test
Distortion at 16mm.
Tokina 11-16mm Distortion Test
Distortion at 11mm.
Sony Rx100 Mk2's Lens vs. Tokina 11-16
at 18mm.
Nikon P300's Lens vs. Tokina 11-16
at 16mm.
Sony 16-50 vs. Tokina 11-16
at 16mm.
F2.8 and F8
Sony 16-105 vs. Tokina 11-16
at 16mm.
F2.8 and F8
Sony 16-50 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8, F5.6, F11
Sony 16-105 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8/F3.5, F5.6, F11
Sony Rx100 Mk2's Lens vs. Tokina 11-16
at 18mm.
16mm vs 18mm
Nikon P300's Lens vs. Tokina 11-16mm F2.8
Sharpness at 16mm.
Tested Apertures F3.5/F4, F5.6, F8
Sony 16-105 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8/F3.5, F3.5, F5.6, F8, F11
Tokina 11-16 vs. Sony 16-50
Sharpness at 16mm.
Tested Apertures F2.8, F3.5, F5.6, F8, F11
Tokina 11-16 vs. Sony 16-105
Sharpness at 16mm.
Tested Apertures F2.8/F3.5, F6.3, F10/F11
Sony 16-50 vs. Tokina 11-16
Sharpness at 16mm.
Tested Apertures F2.8, F6.3, F10
Tokina 11-16mm F2.8
Sharpness at 11mm.
Tested Apertures F2.8/F8, F4/F8, F5.6/F8, F8/F11, F8/F16
Tokina 11-16mm F2.8
Sharpness at 16mm.
Tested Apertures F2.8/F8, F4/F8, F5.6/F8, F8/F11, 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
Sigma 10-20 F4-5.6 vs. Sigma 12-24
Sharpness at 17mm.
Tested Apertures F5/F5.6, F5.6, F6.3
Sony 18-55 vs. Sigma 10-20 F4-5.6
Sharpness at 17-18mm.
Tested Apertures F3.5/F5, F4.5/F5, F5.6, F6.3
Tamron 18-200 vs. Sigma 10-20 F4-5.6
Sharpness at 17-18mm.
Tested Apertures F3.5/F5, F4.5/F5, F5.6, F6.3
Sony 16-50 vs. Sigma 10-20 F4-5.6
Sharpness at 17mm.
Tested Apertures F2.8/F5, F4.5/F5, F5.6, F6.3
Sony 16-105 vs. Sigma 10-20 F4-5.6
Sharpness at 16-18mm.
Tested Apertures F3.5/F5, F4.5/F5, F5.6, F6.3
Tamron 17-50 vs. Sigma 10-20 F4-5.6
Sharpness at 17-18mm.
Tested Apertures F2.8/F5, F3.5/F5, F4.5/F5, F5.6, F6.3
Sigma 10-20mm.F/4-5.6 Distortion Test
Distortion at 20mm.
Sigma 10-20mm.F/4-5.6 Distortion Test
Distortion at 11mm.
Sony Rx100 Mk2's Lens vs. Sigma 10-20 F4-5.6
at 18mm.
Nikon P300's Lens vs. Sigma 10-20 F4-5.6
at 16mm.
Sony 16-50 vs. Sigma 10-20 F4-5.6
at 16mm.
F2.8 and F8
Sony 16-105 vs. Sigma 10-20 F4-5.6
at 16mm.
F2.8 and F8
Sigma 10-20 F4-5.6 vs. Sony 16-50
Sharpness at 16mm.
Tested Apertures F2.8/F5, F5.6, F11
Sony 16-105 vs. Sigma 10-20 F4-5.6
Sharpness at 16mm.
Tested Apertures F3.5/F5, F5.6, F11
Sony Rx100 Mk2's Lens vs. Sigma 10-20 F4-5.6
at 18mm.
16mm vs 18mm
Nikon P300's Lens vs. Sigma 10-20 F4-5.6
Sharpness at 16mm.
Tested Apertures F4/F5, F5.6, F8
Sony 16-105 vs. Sigma 10-20 F4-5.6
Sharpness at 16mm.
Tested Apertures F3.5/F5, F5.6, F8, F11
Sony 16-50 vs. Sigma 10-20 F4-5.6
Sharpness at 16mm.
Tested Apertures F2.8/F5, F3.5/F5, F5.6, F8, F11
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
Sharpness at 16mm.
Tested Apertures F3.5/F5, F6.3, F11
Sigma 10-20 F4-5.6
Sharpness at 10mm.
Tested Apertures F4/F11, F5.6/F11, F8/F11, F11/F16
Sigma 10-20 F4-5.6
Sharpness at 20mm.
Tested Apertures F5.6/F8, F8/F11, F8/F16