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  Comparison # 2884 
  
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_5807Vivitar 13mm. F2.8  
against
Photo_5814 Sigma 12-24 F4.5-5.6 DG
F2.8 1/1000 100 13mm.    
  F4.5 1/500100 15mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/2.8
Brightness 104
9% Brighter
Vivitar 13mm. F2.8
Border (Left)
F/2.8
Brightness 91
5% Brighter
Vivitar 13mm. F2.8
Border (Right)
F/2.8
Brightness 106
6% Brighter
Vivitar 13mm. F2.8
Vignetting
F/2.8
Brightness 173
10% Brighter
Vivitar 13mm. F2.8
Center
F/2.8
Brightness 81
8% Brighter
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/4.5
Brightness 82
9% Darker
Sigma 12-24 F4.5-5.6 DG
Border (Left)
F/4.5
Brightness 78
5% Darker
Sigma 12-24 F4.5-5.6 DG
Border (Right)
F/4.5
Brightness 91
6% Darker
Sigma 12-24 F4.5-5.6 DG
Vignetting
F/4.5
Brightness 148
10% Darker
Sigma 12-24 F4.5-5.6 DG
Center
F/4.5
Brightness 62
8% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_5808Vivitar 13mm. F2.8  
against
Photo_5814 Sigma 12-24 F4.5-5.6 DG
F4 1/640 100 13mm.    
  F4.5 1/500100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/4
Brightness 90
(Almost Same)
Vivitar 13mm. F2.8
Border (Left)
F/4
Brightness 99
8% Brighter
Vivitar 13mm. F2.8
Border (Right)
F/4
Brightness 113
8% Brighter
Vivitar 13mm. F2.8
Vignetting
F/4
Brightness 185
15% Brighter
Vivitar 13mm. F2.8
Center
F/4
Brightness 69
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/4.5
Brightness 82
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Border (Left)
F/4.5
Brightness 78
8% Darker
Sigma 12-24 F4.5-5.6 DG
Border (Right)
F/4.5
Brightness 91
8% Darker
Sigma 12-24 F4.5-5.6 DG
Vignetting
F/4.5
Brightness 148
15% Darker
Sigma 12-24 F4.5-5.6 DG
Center
F/4.5
Brightness 62
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_5809Vivitar 13mm. F2.8  
against
Photo_5815 Sigma 12-24 F4.5-5.6 DG
F5.6 1/320 100 13mm.    
  F5.6 1/320100 15mm.  
100% (1:1) Crop Samples
Vivitar 13mm. F2.8
Focus Point
F/5.6
Brightness 88
(Almost Same)
Vivitar 13mm. F2.8
Border (Left)
F/5.6
Brightness 99
5% Brighter
Vivitar 13mm. F2.8
Border (Right)
F/5.6
Brightness 115
6% Brighter
Vivitar 13mm. F2.8
Vignetting
F/5.6
Brightness 189
11% Brighter
Vivitar 13mm. F2.8
Center
F/5.6
Brightness 67
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.6
Brightness 83
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Border (Left)
F/5.6
Brightness 86
5% Darker
Sigma 12-24 F4.5-5.6 DG
Border (Right)
F/5.6
Brightness 100
6% Darker
Sigma 12-24 F4.5-5.6 DG
Vignetting
F/5.6
Brightness 161
11% Darker
Sigma 12-24 F4.5-5.6 DG
Center
F/5.6
Brightness 63
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_5810Vivitar 13mm. F2.8  
against
Photo_5816 Sigma 12-24 F4.5-5.6 DG
F8 1/160 100 13mm.    
  F8.0 1/160100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 5 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 (Left), Border (Right), Vignetting, Center
  EXIF  
 
  Comparison Photo # 5  
Photo_5811Vivitar 13mm. F2.8  
against
Photo_5817 Sigma 12-24 F4.5-5.6 DG
F11 1/80 100 13mm.    
  F11.0 1/80100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 5 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 (Left), Border (Right), Vignetting, Center
  EXIF  
 
  Comparison Photo # 6  
Photo_5812Vivitar 13mm. F2.8  
against
Photo_5818 Sigma 12-24 F4.5-5.6 DG
F16 1/50 100 13mm.    
  F16.0 1/40100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 5 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 (Left), Border (Right), Vignetting, Center
  EXIF  
 
  Comparison Photo # 7  
Photo_5813Vivitar 13mm. F2.8  
against
Photo_5819 Sigma 12-24 F4.5-5.6 DG
F22 1/40 100 13mm.    
  F22.0 1/20100 15mm.  
100% (1:1) Crop Samples
Login or Register to display 5 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 (Left), Border (Right), Vignetting, Center
  EXIF  
 
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  Other Sigma 12-24 F4.5-5.6 DG vs. Vivitar 13mm. F2.8 Comparisons  
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
  Other Comparisons of Sigma 12-24 F4.5-5.6 DG  
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 12-24 vs. Sigma 10-20 F4-5.6
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
Sigma 12-24 F4.5-5.6 DG Video Auto Focus Performance
at 12-24mm.
Auto Focus Noise (Sound), AF Speed and Focus Hunting Test (in Silent Enviroment)
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 12-24
Sharpness at 17-18mm.
Tested Apertures F3.5/F5.6, F4.5/F5.6, F5.6, F6.3
Tamron 18-200 vs. Sigma 12-24
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
Tamron 17-50 vs. Sigma 12-24
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
Carl Zeiss 24-70 vs. Sigma 12-24
Sharpness at 24mm.
Tested Apertures F2.8/F5.6, F5.6, F8, F16, F16
  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/F4.5, F4/F4.5, F5.6, F8, F11, F16, F22
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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