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  Comparison # 2889 
  
Lens Sharpness Comparison

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
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_5839Vivitar 13mm. F2.8  
against
Photo_5846 Sigma 10-20mm. F/4-5.6
F2.8 1/1600 100 13mm.    
  F4.5 1/640100 13mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/2.8
Brightness 53
(Almost Same)
Vivitar 13mm. F2.8
Center
F/2.8
Brightness 73
(Almost Same)
Vivitar 13mm. F2.8
Border (Right)
F/2.8
Brightness 57
(Almost Same)
Vivitar 13mm. F2.8
vignetting
F/2.8
Brightness 89
5% Brighter
Sigma 10-20mm. F/4-5.6
Focus Point
F/4.5
Brightness 54
(Almost Same)
Sigma 10-20mm. F/4-5.6
Center
F/4.5
Brightness 78
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Right)
F/4.5
Brightness 55
(Almost Same)
Sigma 10-20mm. F/4-5.6
vignetting
F/4.5
Brightness 77
5% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_5840Vivitar 13mm. F2.8  
against
Photo_5846 Sigma 10-20mm. F/4-5.6
F4 1/800 100 13mm.    
  F4.5 1/640100 13mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/4
Brightness 54
(Exactly Same)
Vivitar 13mm. F2.8
Center
F/4
Brightness 68
(Almost Same)
Vivitar 13mm. F2.8
Border (Right)
F/4
Brightness 71
6% Brighter
Vivitar 13mm. F2.8
vignetting
F/4
Brightness 111
14% Brighter
Sigma 10-20mm. F/4-5.6
Focus Point
F/4.5
Brightness 54
(Exactly Same)
Sigma 10-20mm. F/4-5.6
Center
F/4.5
Brightness 78
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Right)
F/4.5
Brightness 55
6% Darker
Sigma 10-20mm. F/4-5.6
vignetting
F/4.5
Brightness 77
14% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_5841Vivitar 13mm. F2.8  
against
Photo_5847 Sigma 10-20mm. F/4-5.6
F5.6 1/500 100 13mm.    
  F5.6 1/400100 13mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/5.6
Brightness 41
8% Darker
Vivitar 13mm. F2.8
Center
F/5.6
Brightness 53
16% Darker
Vivitar 13mm. F2.8
Border (Right)
F/5.6
Brightness 64
(Almost Same)
Vivitar 13mm. F2.8
vignetting
F/5.6
Brightness 92
(Almost Same)
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.6
Brightness 62
8% Brighter
Sigma 10-20mm. F/4-5.6
Center
F/5.6
Brightness 94
16% Brighter
Sigma 10-20mm. F/4-5.6
Border (Right)
F/5.6
Brightness 67
(Almost Same)
Sigma 10-20mm. F/4-5.6
vignetting
F/5.6
Brightness 100
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_5842Vivitar 13mm. F2.8  
against
Photo_5848 Sigma 10-20mm. F/4-5.6
F8 1/250 100 13mm.    
  F8.0 1/200100 13mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/8 vs. Sigma 10-20mm. F/4-5.6 F/8.0 for locations Focus Point, Center, Border (Right), vignetting
  EXIF  
 
  Comparison Photo # 5  
Photo_5843Vivitar 13mm. F2.8  
against
Photo_5849 Sigma 10-20mm. F/4-5.6
F11 1/160 100 13mm.    
  F11.0 1/80100 13mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/11 vs. Sigma 10-20mm. F/4-5.6 F/11.0 for locations Focus Point, Center, Border (Right), vignetting
  EXIF  
 
  Comparison Photo # 6  
Photo_5844Vivitar 13mm. F2.8  
against
Photo_5850 Sigma 10-20mm. F/4-5.6
F16 1/80 100 13mm.    
  F16.0 1/40100 13mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/16 vs. Sigma 10-20mm. F/4-5.6 F/16.0 for locations Focus Point, Center, Border (Right), vignetting
  EXIF  
 
  Comparison Photo # 7  
Photo_5845Vivitar 13mm. F2.8  
against
Photo_5851 Sigma 10-20mm. F/4-5.6
F22 1/50 100 13mm.    
  F22.0 1/20100 13mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/22 vs. Sigma 10-20mm. F/4-5.6 F/22.0 for locations Focus Point, Center, Border (Right), vignetting
  EXIF  
 
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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.
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  Other Sigma 10-20mm. F/4-5.6 vs. Vivitar 13mm. F2.8 Comparisons  
Sigma 10-20 F4-5.6 vs. Vivitar 13mm 2.8
Sharpness at 13mm.
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  Other Comparisons of Sigma 10-20mm. F/4-5.6  
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Sharpness at 12mm.
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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
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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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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
  Other Comparisons of Vivitar 13mm. F2.8  
Sigma 12-24 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. 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. Vivitar 13mm 2.8
Sharpness at 13mm.
Tested Apertures F2.8/F5, F4/F5, F5.6, F8, F11, F16, F22
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