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  Comparison # 1991 
 
Lens Sharpness Comparison

Sigma 17-70 vs. Tokina 28-70 2.8

Sharpness at 55mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_3875Tokina 28-70mm. F2.8  
against
Photo_3884 Sigma 17-70 F/2.8-4 DS Macro HSM
F2.8 1/125 100 55mm.    
  F4.0 1/50100 55mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Tokina 28-70mm. F2.8
Center
F/2.8
Brightness 125
(Almost Same)
Tokina 28-70mm. F2.8
Between Center and Top Border
F/2.8
Brightness 104
(Almost Same)
Tokina 28-70mm. F2.8
Corner (Top Right)
F/2.8
Brightness 129
(Almost Same)
Tokina 28-70mm. F2.8
Corner (Top Left)
F/2.8
Brightness 140
(Almost Same)
Tokina 28-70mm. F2.8
Between Center and Left Border
F/2.8
Brightness 110
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/4.0
Brightness 119
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Top Border
F/4.0
Brightness 103
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Right)
F/4.0
Brightness 124
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Left)
F/4.0
Brightness 131
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Left Border
F/4.0
Brightness 108
(Almost Same)
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_3876Tokina 28-70mm. F2.8  
against
Photo_3884 Sigma 17-70 F/2.8-4 DS Macro HSM
F3.5 1/80 100 55mm.    
  F4.0 1/50100 55mm.  
100% (1:1) Crop Samples
Tokina 28-70mm. F2.8
Center
F/3.5
Brightness 132
5% Brighter
Tokina 28-70mm. F2.8
Between Center and Top Border
F/3.5
Brightness 118
6% Brighter
Tokina 28-70mm. F2.8
Corner (Top Right)
F/3.5
Brightness 154
11% Brighter
Tokina 28-70mm. F2.8
Corner (Top Left)
F/3.5
Brightness 166
14% Brighter
Tokina 28-70mm. F2.8
Between Center and Left Border
F/3.5
Brightness 127
8% Brighter
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/4.0
Brightness 119
5% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Top Border
F/4.0
Brightness 103
6% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Right)
F/4.0
Brightness 124
11% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Left)
F/4.0
Brightness 131
14% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Left Border
F/4.0
Brightness 108
8% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_3877Tokina 28-70mm. F2.8  
against
Photo_3884 Sigma 17-70 F/2.8-4 DS Macro HSM
F4.0 1/60 100 55mm.    
  F4.0 1/50100 55mm.  
100% (1:1) Crop Samples
Tokina 28-70mm. F2.8
Center
F/4.0
Brightness 137
7% Brighter
Tokina 28-70mm. F2.8
Between Center and Top Border
F/4.0
Brightness 124
9% Brighter
Tokina 28-70mm. F2.8
Corner (Top Right)
F/4.0
Brightness 163
15% Brighter
Tokina 28-70mm. F2.8
Corner (Top Left)
F/4.0
Brightness 175
18% Brighter
Tokina 28-70mm. F2.8
Between Center and Left Border
F/4.0
Brightness 132
10% Brighter
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/4.0
Brightness 119
7% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Top Border
F/4.0
Brightness 103
9% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Right)
F/4.0
Brightness 124
15% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Left)
F/4.0
Brightness 131
18% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Left Border
F/4.0
Brightness 108
10% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 4  
Photo_3878Tokina 28-70mm. F2.8  
against
Photo_3885 Sigma 17-70 F/2.8-4 DS Macro HSM
F4.5 1/50 100 55mm.    
  F4.5 1/40100 55mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tokina 28-70mm. F2.8 F/4.5 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/4.5 for locations Center, Between Center and Top Border, Corner (Top Right), Corner (Top Left), Between Center and Left Border
  EXIF  
 
  Comparison Photo # 5  
Photo_3879Tokina 28-70mm. F2.8  
against
Photo_3886 Sigma 17-70 F/2.8-4 DS Macro HSM
F5.0 1/40 100 55mm.    
  F5.0 1/30100 55mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tokina 28-70mm. F2.8 F/5.0 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/5.0 for locations Center, Between Center and Top Border, Corner (Top Right), Corner (Top Left), Between Center and Left Border
  EXIF  
 
  Comparison Photo # 6  
Photo_3880Tokina 28-70mm. F2.8  
against
Photo_3887 Sigma 17-70 F/2.8-4 DS Macro HSM
F5.6 1/30 100 55mm.    
  F5.6 1/25100 55mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tokina 28-70mm. F2.8 F/5.6 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/5.6 for locations Center, Between Center and Top Border, Corner (Top Right), Corner (Top Left), Between Center and Left Border
  EXIF  
 
  Comparison Photo # 7  
Photo_3881Tokina 28-70mm. F2.8  
against
Photo_3888 Sigma 17-70 F/2.8-4 DS Macro HSM
F6.3 1/25 100 55mm.    
  F6.3 1/20100 55mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tokina 28-70mm. F2.8 F/6.3 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/6.3 for locations Center, Between Center and Top Border, Corner (Top Right), Corner (Top Left), Between Center and Left Border
  EXIF  
 
  Comparison Photo # 8  
Photo_3882Tokina 28-70mm. F2.8  
against
Photo_3889 Sigma 17-70 F/2.8-4 DS Macro HSM
F7.1 1/20 100 55mm.    
  F7.1 1/15100 55mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tokina 28-70mm. F2.8 F/7.1 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/7.1 for locations Center, Between Center and Top Border, Corner (Top Right), Corner (Top Left), Between Center and Left Border
  EXIF  
 
  Comparison Photo # 9  
Photo_3883Tokina 28-70mm. F2.8  
against
Photo_3890 Sigma 17-70 F/2.8-4 DS Macro HSM
F8.0 1/15 100 55mm.    
  F8.0 1/13100 55mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tokina 28-70mm. F2.8 F/8.0 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/8.0 for locations Center, Between Center and Top Border, Corner (Top Right), Corner (Top Left), Between Center and Left Border
  EXIF  
 
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  Other Sigma 17-70 F/2.8-4 DS Macro HSM vs. Tokina 28-70mm. F2.8 Comparisons  
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 60mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 55mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.2/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 70mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F8, F10
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 50mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F8, F11
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 60mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F8
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10, F13
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 50mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 50mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Tokina 28-70 2.8
Sharpness at 70mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
  Other Comparisons of Sigma 17-70 F/2.8-4 DS Macro HSM  
Sigma 17-70 vs. Sony 16-105
Sharpness at 70mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Minolta 28-105
Sharpness at 70mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Minolta 35-105mm.
Sharpness at 70mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Tamron 18-200
Sharpness at 70mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8
Minolta 28-70 2.8 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Sony 16-50
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Sigma 17-70 vs. Tamron 18-200
Sharpness at 28mm.
Tested Apertures F3.2/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1
Sigma 17-70 vs. Minolta 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Sigma 17-70 vs. Sony 16-105
Sharpness at 28mm.
Tested Apertures F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1
Sony 18-55 vs. Sigma 17-70
Sharpness at 28mm.
Tested Apertures F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1
Cosina 19-35 vs. Sigma 17-70
Sharpness at 28mm.
Tested Apertures F3.2/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1
Tamron 17-50 vs. Sigma 17-70
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Minolta 28-105 vs. Sigma 17-70
Sharpness at 28mm.
Tested Apertures F3.2/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Sigma 17-70 vs. Minolta 35-105mm.
Sharpness at 35mm.
Tested Apertures F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Minolta 28-105
Sharpness at 35mm.
Tested Apertures F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F3.5, F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Cosina 19-35
Sharpness at 35mm.
Tested Apertures F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 16-50 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
  Other Comparisons of Tokina 28-70mm. F2.8  
Tokina 28-70 2.8 vs. Sony 16-105
Sharpness at 70mm.
Tested Apertures F2.8/F5.6, F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Minolta 28-105
Sharpness at 70mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Minolta 35-105mm.
Sharpness at 70mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Tamron 18-200
Sharpness at 70mm.
Tested Apertures F2.8/F5.6, F3.5/F5.6, F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Minolta 28-70 2.8
Sharpness at 70mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Sony 16-50
Sharpness at 28mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Tokina 28-70 2.8 vs. Tamron 18-200
Sharpness at 28mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1
Minolta 28-70 2.8 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Sony 16-105 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1
Sony 18-55 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1
Cosina 19-35 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1
Tamron 17-50 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Minolta 28-105 vs. Tokina 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1