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  Comparison # 2882 
  
Lens Sharpness Comparison

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
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_5783Vivitar 13mm. F2.8  
against
Photo_5790 Sigma 10-20mm. F/4-5.6
F2.8 1/500 100 13mm.    
  F5.0 1/125100 15mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/2.8
Brightness 73
7% Darker
Vivitar 13mm. F2.8
Border (Bottom)
F/2.8
Brightness 186
(Almost Same)
Vivitar 13mm. F2.8
Center
F/2.8
Brightness 92
6% Darker
Vivitar 13mm. F2.8
Border (Left)
F/2.8
Brightness 110
(Almost Same)
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.0
Brightness 92
7% Brighter
Sigma 10-20mm. F/4-5.6
Border (Bottom)
F/5.0
Brightness 189
(Almost Same)
Sigma 10-20mm. F/4-5.6
Center
F/5.0
Brightness 106
6% Brighter
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.0
Brightness 113
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_5784Vivitar 13mm. F2.8  
against
Photo_5790 Sigma 10-20mm. F/4-5.6
F4 1/400 100 13mm.    
  F5.0 1/125100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/4
Brightness 59
13% Darker
Vivitar 13mm. F2.8
Border (Bottom)
F/4
Brightness 183
(Almost Same)
Vivitar 13mm. F2.8
Center
F/4
Brightness 79
11% Darker
Vivitar 13mm. F2.8
Border (Left)
F/4
Brightness 112
(Almost Same)
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.0
Brightness 92
13% Brighter
Sigma 10-20mm. F/4-5.6
Border (Bottom)
F/5.0
Brightness 189
(Almost Same)
Sigma 10-20mm. F/4-5.6
Center
F/5.0
Brightness 106
11% Brighter
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.0
Brightness 113
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_5785Vivitar 13mm. F2.8  
against
Photo_5791 Sigma 10-20mm. F/4-5.6
F5.6 1/200 100 13mm.    
  F5.6 1/100100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/5.6
Brightness 56
19% Darker
Vivitar 13mm. F2.8
Border (Bottom)
F/5.6
Brightness 176
12% Darker
Vivitar 13mm. F2.8
Center
F/5.6
Brightness 74
17% Darker
Vivitar 13mm. F2.8
Border (Left)
F/5.6
Brightness 107
9% Darker
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.6
Brightness 105
19% Brighter
Sigma 10-20mm. F/4-5.6
Border (Bottom)
F/5.6
Brightness 206
12% Brighter
Sigma 10-20mm. F/4-5.6
Center
F/5.6
Brightness 117
17% Brighter
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.6
Brightness 131
9% Brighter
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_5786Vivitar 13mm. F2.8  
against
Photo_5792 Sigma 10-20mm. F/4-5.6
F8 1/100 100 13mm.    
  F8.0 1/50100 15mm.  
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, Border (Bottom), Center, Border (Left)
  EXIF  
 
  Comparison Photo # 5  
Photo_5787Vivitar 13mm. F2.8  
against
Photo_5793 Sigma 10-20mm. F/4-5.6
F11 1/60 100 13mm.    
  F11.0 1/25100 15mm.  
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, Border (Bottom), Center, Border (Left)
  EXIF  
 
  Comparison Photo # 6  
Photo_5788Vivitar 13mm. F2.8  
against
Photo_5794 Sigma 10-20mm. F/4-5.6
F16 1/30 100 13mm.    
  F16.0 1/13100 15mm.  
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, Border (Bottom), Center, Border (Left)
  EXIF  
 
  Comparison Photo # 7  
Photo_5789Vivitar 13mm. F2.8  
against
Photo_5794 Sigma 10-20mm. F/4-5.6
F22 1/20 100 13mm.    
  F16.0 1/13100 15mm.  
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/16.0 for locations Focus Point, Border (Bottom), Center, Border (Left)
  EXIF  
 
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Sharpness at 13mm.
Tested Apertures F2.8/F5, F4/F5, F5.6, F8, F11, F16, F22
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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 13mm.
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Sigma 10-20 F4-5.6 vs. Sigma 12-24
Sharpness at 12mm.
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Sharpness at 18mm.
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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
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
  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/F4.5, F4/F4.5, F5.6, F8, F11, F16, F22
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