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  Test # 577 
 
Lens Test

Sigma 10-20 F4-5.6 Sharpness Test at 20mm.

at 20mm.
Tested Apertures Between F5.6 to F13.0
 
Test by Sinan Ozturk   
PhotoAgainst Photo Editor's Comment: In our official sharpness test we shoot chart that consists of 1 and 5 American Dolars. We take 3 crops from the very top left corner, center and between center and top left corner.

We shoot with every aperture from lens' widest aperture to F13. For zoom lenses we do the test for their both wide and tele focal lengths.

Unlike our other comparisons, these sharpness shots are taken in different times and lighting conditions might be different. So please consider only lenses' sharpness in these tests (we recommend analyzing black and white crops we provide) as contrast and color cast might not be very accurate in these comparisons. After reviewing the test, scroll to the bottom of the page to compare Sigma 10-20 F4-5.6's Sharpness with other lenses.
  
  
  Comparison Photo # 1  
Photo_1349Sigma 10-20mm. F/4-5.6  
against
Photo_1348 Sigma 10-20mm. F/4-5.6
F6.3 1/25 100 20mm.    
  F5.6 1/30100 20mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Center
F/6.3
Brightness 146
5% Brighter
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/6.3
Brightness 92
5% Brighter
Sigma 10-20mm. F/4-5.6
Between Center and Top Left Corner
F/6.3
Brightness 116
5% Brighter
Sigma 10-20mm. F/4-5.6
Center
F/5.6
Brightness 132
5% Darker
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.6
Brightness 80
5% Darker
Sigma 10-20mm. F/4-5.6
Between Center and Top Left Corner
F/5.6
Brightness 102
5% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_1350Sigma 10-20mm. F/4-5.6  
against
Photo_1348 Sigma 10-20mm. F/4-5.6
F7.1 1/20 100 20mm.    
  F5.6 1/30100 20mm.  
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Center
F/7.1
Brightness 152
8% Brighter
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/7.1
Brightness 97
7% Brighter
Sigma 10-20mm. F/4-5.6
Between Center and Top Left Corner
F/7.1
Brightness 122
8% Brighter
Sigma 10-20mm. F/4-5.6
Center
F/5.6
Brightness 132
8% Darker
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.6
Brightness 80
7% Darker
Sigma 10-20mm. F/4-5.6
Between Center and Top Left Corner
F/5.6
Brightness 102
8% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_1351Sigma 10-20mm. F/4-5.6  
against
Photo_1348 Sigma 10-20mm. F/4-5.6
F8.0 1/15 100 20mm.    
  F5.6 1/30100 20mm.  
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Center
F/8.0
Brightness 151
7% Brighter
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/8.0
Brightness 102
9% Brighter
Sigma 10-20mm. F/4-5.6
Between Center and Top Left Corner
F/8.0
Brightness 129
11% Brighter
Sigma 10-20mm. F/4-5.6
Center
F/5.6
Brightness 132
7% Darker
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.6
Brightness 80
9% Darker
Sigma 10-20mm. F/4-5.6
Between Center and Top Left Corner
F/5.6
Brightness 102
11% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 4  
Photo_1352Sigma 10-20mm. F/4-5.6  
against
Photo_1348 Sigma 10-20mm. F/4-5.6
F9.0 1/13 100 20mm.    
  F5.6 1/30100 20mm.  
100% (1:1) Crop Samples
Login or Register to display 3 crops from Sigma 10-20mm. F/4-5.6 F/9.0 vs. Sigma 10-20mm. F/4-5.6 F/5.6 for locations Center, Corner (Top Left), Between Center and Top Left Corner
  EXIF  
 
  Comparison Photo # 5  
Photo_1353Sigma 10-20mm. F/4-5.6  
against
Photo_1348 Sigma 10-20mm. F/4-5.6
F11.0 1/8 100 20mm.    
  F5.6 1/30100 20mm.  
100% (1:1) Crop Samples
Login or Register to display 3 crops from Sigma 10-20mm. F/4-5.6 F/11.0 vs. Sigma 10-20mm. F/4-5.6 F/5.6 for locations Center, Corner (Top Left), Between Center and Top Left Corner
  EXIF  
 
  Comparison Photo # 6  
Photo_1354Sigma 10-20mm. F/4-5.6  
against
Photo_1348 Sigma 10-20mm. F/4-5.6
F13.0 1/6 100 20mm.    
  F5.6 1/30100 20mm.  
100% (1:1) Crop Samples
Login or Register to display 3 crops from Sigma 10-20mm. F/4-5.6 F/13.0 vs. Sigma 10-20mm. F/4-5.6 F/5.6 for locations Center, Corner (Top Left), Between Center and Top Left Corner
  EXIF  
 
PhotoAgainstPhoto.com Official Sharpness Test
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  Other Sigma 10-20mm. F/4-5.6 vs. Comparisons  
Sigma 10-20 F4-5.6 Sharpness Test at 10mm.
at 10mm.
Tested Apertures Between F4.0 to F13.0
Sigma 10-20mm.F/4-5.6 Distortion Test
Distortion at 20mm.
Sigma 10-20mm.F/4-5.6 Distortion Test
Distortion at 11mm.
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
  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 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