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  Comparison # 2881 
 
Lens Sharpness Comparison

Sigma 12-24 vs. Vivitar 13mm 2.8

Sharpness at 13mm.
Tested Apertures F2.8/F5, F4/F5, F5.6, F8, F11, F16, F22
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_5783Vivitar 13mm. F2.8  
against
Photo_5795 Sigma 12-24 F4.5-5.6 DG
F2.8 1/500 100 13mm.    
  F5.0 1/160100 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
(Almost Same)
Vivitar 13mm. F2.8
Border (Bottom)
F/2.8
Brightness 186
5% Darker
Vivitar 13mm. F2.8
Center
F/2.8
Brightness 92
(Almost Same)
Vivitar 13mm. F2.8
Border (Left)
F/2.8
Brightness 110
6% Darker
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.0
Brightness 81
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Border (Bottom)
F/5.0
Brightness 200
5% Brighter
Sigma 12-24 F4.5-5.6 DG
Center
F/5.0
Brightness 98
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Border (Left)
F/5.0
Brightness 124
6% Brighter
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_5784Vivitar 13mm. F2.8  
against
Photo_5795 Sigma 12-24 F4.5-5.6 DG
F4 1/400 100 13mm.    
  F5.0 1/160100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/4
Brightness 59
9% Darker
Vivitar 13mm. F2.8
Border (Bottom)
F/4
Brightness 183
6% Darker
Vivitar 13mm. F2.8
Center
F/4
Brightness 79
7% Darker
Vivitar 13mm. F2.8
Border (Left)
F/4
Brightness 112
5% Darker
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.0
Brightness 81
9% Brighter
Sigma 12-24 F4.5-5.6 DG
Border (Bottom)
F/5.0
Brightness 200
6% Brighter
Sigma 12-24 F4.5-5.6 DG
Center
F/5.0
Brightness 98
7% Brighter
Sigma 12-24 F4.5-5.6 DG
Border (Left)
F/5.0
Brightness 124
5% Brighter
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_5785Vivitar 13mm. F2.8  
against
Photo_5796 Sigma 12-24 F4.5-5.6 DG
F5.6 1/200 100 13mm.    
  F5.6 1/125100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/5.6
Brightness 56
12% Darker
Vivitar 13mm. F2.8
Border (Bottom)
F/5.6
Brightness 176
13% Darker
Vivitar 13mm. F2.8
Center
F/5.6
Brightness 74
12% Darker
Vivitar 13mm. F2.8
Border (Left)
F/5.6
Brightness 107
11% Darker
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.6
Brightness 87
12% Brighter
Sigma 12-24 F4.5-5.6 DG
Border (Bottom)
F/5.6
Brightness 209
13% Brighter
Sigma 12-24 F4.5-5.6 DG
Center
F/5.6
Brightness 105
12% Brighter
Sigma 12-24 F4.5-5.6 DG
Border (Left)
F/5.6
Brightness 135
11% Brighter
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 4  
Photo_5786Vivitar 13mm. F2.8  
against
Photo_5797 Sigma 12-24 F4.5-5.6 DG
F8 1/100 100 13mm.    
  F8.0 1/60100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/8 vs. Sigma 12-24 F4.5-5.6 DG F/8.0 for locations Focus Point, Border (Bottom), Center, Border (Left)
  EXIF  
 
  Comparison Photo # 5  
Photo_5787Vivitar 13mm. F2.8  
against
Photo_5798 Sigma 12-24 F4.5-5.6 DG
F11 1/60 100 13mm.    
  F11.0 1/30100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/11 vs. Sigma 12-24 F4.5-5.6 DG F/11.0 for locations Focus Point, Border (Bottom), Center, Border (Left)
  EXIF  
 
  Comparison Photo # 6  
Photo_5788Vivitar 13mm. F2.8  
against
Photo_5799 Sigma 12-24 F4.5-5.6 DG
F16 1/30 100 13mm.    
  F16.0 1/15100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/16 vs. Sigma 12-24 F4.5-5.6 DG F/16.0 for locations Focus Point, Border (Bottom), Center, Border (Left)
  EXIF  
 
  Comparison Photo # 7  
Photo_5789Vivitar 13mm. F2.8  
against
Photo_5800 Sigma 12-24 F4.5-5.6 DG
F22 1/20 100 13mm.    
  F22.0 1/8100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Vivitar 13mm. F2.8 F/22 vs. Sigma 12-24 F4.5-5.6 DG F/22.0 for locations Focus Point, Border (Bottom), Center, Border (Left)
  EXIF  
 
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