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  Comparison # 2888 
  
Lens Sharpness Comparison

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
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_5839Vivitar 13mm. F2.8  
against
Photo_5852 Sigma 12-24 F4.5-5.6 DG
F2.8 1/1600 100 13mm.    
  F4.5 1/640100 15mm.  
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
(Exactly Same)
Vivitar 13mm. F2.8
Border (Right)
F/2.8
Brightness 57
(Almost Same)
Vivitar 13mm. F2.8
vignetting
F/2.8
Brightness 89
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/4.5
Brightness 51
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Center
F/4.5
Brightness 73
(Exactly Same)
Sigma 12-24 F4.5-5.6 DG
Border (Right)
F/4.5
Brightness 56
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
vignetting
F/4.5
Brightness 90
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_5840Vivitar 13mm. F2.8  
against
Photo_5852 Sigma 12-24 F4.5-5.6 DG
F4 1/800 100 13mm.    
  F4.5 1/640100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/4
Brightness 54
(Almost 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
9% Brighter
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/4.5
Brightness 51
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Center
F/4.5
Brightness 73
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Border (Right)
F/4.5
Brightness 56
6% Darker
Sigma 12-24 F4.5-5.6 DG
vignetting
F/4.5
Brightness 90
9% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_5841Vivitar 13mm. F2.8  
against
Photo_5853 Sigma 12-24 F4.5-5.6 DG
F5.6 1/500 100 13mm.    
  F5.6 1/400100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/5.6
Brightness 41
6% Darker
Vivitar 13mm. F2.8
Center
F/5.6
Brightness 53
10% Darker
Vivitar 13mm. F2.8
Border (Right)
F/5.6
Brightness 64
(Exactly Same)
Vivitar 13mm. F2.8
vignetting
F/5.6
Brightness 92
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.6
Brightness 55
6% Brighter
Sigma 12-24 F4.5-5.6 DG
Center
F/5.6
Brightness 78
10% Brighter
Sigma 12-24 F4.5-5.6 DG
Border (Right)
F/5.6
Brightness 64
(Exactly Same)
Sigma 12-24 F4.5-5.6 DG
vignetting
F/5.6
Brightness 101
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_5842Vivitar 13mm. F2.8  
against
Photo_5854 Sigma 12-24 F4.5-5.6 DG
F8 1/250 100 13mm.    
  F8.0 1/200100 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, Center, Border (Right), vignetting
  EXIF  
 
  Comparison Photo # 5  
Photo_5843Vivitar 13mm. F2.8  
against
Photo_5855 Sigma 12-24 F4.5-5.6 DG
F11 1/160 100 13mm.    
  F11.0 1/100100 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, Center, Border (Right), vignetting
  EXIF  
 
  Comparison Photo # 6  
Photo_5844Vivitar 13mm. F2.8  
against
Photo_5856 Sigma 12-24 F4.5-5.6 DG
F16 1/80 100 13mm.    
  F16.0 1/50100 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, Center, Border (Right), vignetting
  EXIF  
 
  Comparison Photo # 7  
Photo_5845Vivitar 13mm. F2.8  
against
Photo_5857 Sigma 12-24 F4.5-5.6 DG
F22 1/50 100 13mm.    
  F22.0 1/25100 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, Center, Border (Right), vignetting
  EXIF  
 
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Sigma 10-20 F4-5.6 vs. Vivitar 13mm 2.8
Sharpness at 13mm.
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Sigma 12-24 vs. Sigma 10-20 F4-5.6
Sharpness at 13mm.
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  Other Sigma 12-24 F4.5-5.6 DG vs. Vivitar 13mm. F2.8 Comparisons  
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Sharpness at 13mm.
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Sharpness at 13mm.
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Sharpness at 13mm.
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Sharpness at 13mm.
Tested Apertures F5, F5.6, F8, F11, F16, F16/F22
Sigma 12-24 Sharpness Test at 24mm.
at 24mm.
Tested Apertures Between F5.6 to F13.0
Sigma 12-24 Sharpness Test at 12mm.
at 12mm.
Tested Apertures Between F4.5 to F13.0
Sigma 10-20 vs. Sigma 12-24
at 10-12mm.
Wide Angle Video Shot
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at 12-24mm.
Auto Focus Noise (Sound), AF Speed and Focus Hunting Test (in Silent Enviroment)
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Sharpness at 17mm.
Tested Apertures F5/F5.6, F5.6, F6.3
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Sharpness at 17-18mm.
Tested Apertures F3.5/F5.6, F4.5/F5.6, F5.6, F6.3
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Sharpness at 17-18mm.
Tested Apertures F3.5/F5.6, F4.5/F5.6, F5.6, F6.3
Sony 16-50 vs. Sigma 12-24
Sharpness at 17mm.
Tested Apertures F2.8/F5.6, F4.5/F5.6, F5.6, F6.3
Sony 16-105 vs. Sigma 12-24
Sharpness at 16-17mm.
Tested Apertures F3.5/F5.6, F4.5/F5.6, F5.6, F6.3
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Sharpness at 17-18mm.
Tested Apertures F2.8/F5.6, F4.5/F5.6, F5.6, F6.3
Sigma 12-24 Distortion Test
Distortion at 12mm.
Sigma 12-24 Distortion Test
Distortion at 24mm.
Sigma 12-24 Video AF Performance
at 12-24mm.
Auto Focus Speed and Noise
Carl Zeiss 24-70 vs. Sigma 12-24
Sharpness at 24mm.
Tested Apertures F2.8/F5.6, F5.6, F8, F16, F13/F16
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Sharpness at 24mm.
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  Other Comparisons of Vivitar 13mm. F2.8  
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
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