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  Comparison # 2144 
 
Lens Sharpness Comparison

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
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_4194Tokina 28-70mm. F2.8  
against
Photo_4253 Sigma 17-70 F/2.8-4 DS Macro HSM
F2.8 1/2000 100 35mm.    
  F3.5 1/800100 35mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Tokina 28-70mm. F2.8
Center
F/2.8
Brightness 196
(Almost Same)
Tokina 28-70mm. F2.8
Corner (Top Right)
F/2.8
Brightness 199
5% Brighter
Tokina 28-70mm. F2.8
Border (Top)
F/2.8
Brightness 161
(Almost Same)
Tokina 28-70mm. F2.8
Between Center and Top Left Corner
F/2.8
Brightness 91
(Almost Same)
Tokina 28-70mm. F2.8
Around Center
F/2.8
Brightness 145
(Almost Same)
Tokina 28-70mm. F2.8
vignetting
F/2.8
Brightness 124
5% Brighter
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/3.5
Brightness 190
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Right)
F/3.5
Brightness 185
5% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Border (Top)
F/3.5
Brightness 155
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Top Left Corner
F/3.5
Brightness 88
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Around Center
F/3.5
Brightness 141
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
vignetting
F/3.5
Brightness 111
5% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_4195Tokina 28-70mm. F2.8  
against
Photo_4253 Sigma 17-70 F/2.8-4 DS Macro HSM
F3.5 1/1250 100 35mm.    
  F3.5 1/800100 35mm.  
100% (1:1) Crop Samples
Tokina 28-70mm. F2.8
Center
F/3.5
Brightness 196
(Almost Same)
Tokina 28-70mm. F2.8
Corner (Top Right)
F/3.5
Brightness 207
8% Brighter
Tokina 28-70mm. F2.8
Border (Top)
F/3.5
Brightness 164
(Almost Same)
Tokina 28-70mm. F2.8
Between Center and Top Left Corner
F/3.5
Brightness 96
(Almost Same)
Tokina 28-70mm. F2.8
Around Center
F/3.5
Brightness 145
(Almost Same)
Tokina 28-70mm. F2.8
vignetting
F/3.5
Brightness 135
9% Brighter
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/3.5
Brightness 190
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Right)
F/3.5
Brightness 185
8% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Border (Top)
F/3.5
Brightness 155
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Top Left Corner
F/3.5
Brightness 88
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Around Center
F/3.5
Brightness 141
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
vignetting
F/3.5
Brightness 111
9% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_4196Tokina 28-70mm. F2.8  
against
Photo_4254 Sigma 17-70 F/2.8-4 DS Macro HSM
F4.0 1/1000 100 35mm.    
  F4.0 1/640100 35mm.  
100% (1:1) Crop Samples
Tokina 28-70mm. F2.8
Center
F/4.0
Brightness 203
8% Brighter
Tokina 28-70mm. F2.8
Corner (Top Right)
F/4.0
Brightness 215
11% Brighter
Tokina 28-70mm. F2.8
Border (Top)
F/4.0
Brightness 172
7% Brighter
Tokina 28-70mm. F2.8
Between Center and Top Left Corner
F/4.0
Brightness 102
5% Brighter
Tokina 28-70mm. F2.8
Around Center
F/4.0
Brightness 153
7% Brighter
Tokina 28-70mm. F2.8
vignetting
F/4.0
Brightness 147
12% Brighter
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/4.0
Brightness 184
8% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Top Right)
F/4.0
Brightness 186
11% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Border (Top)
F/4.0
Brightness 154
7% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Top Left Corner
F/4.0
Brightness 88
5% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Around Center
F/4.0
Brightness 136
7% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
vignetting
F/4.0
Brightness 117
12% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_4197Tokina 28-70mm. F2.8  
against
Photo_4255 Sigma 17-70 F/2.8-4 DS Macro HSM
F4.5 1/640 100 35mm.    
  F4.5 1/500100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 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, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
  Comparison Photo # 5  
Photo_4198Tokina 28-70mm. F2.8  
against
Photo_4256 Sigma 17-70 F/2.8-4 DS Macro HSM
F5.0 1/640 100 35mm.    
  F5.0 1/400100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 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, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
  Comparison Photo # 6  
Photo_4199Tokina 28-70mm. F2.8  
against
Photo_4257 Sigma 17-70 F/2.8-4 DS Macro HSM
F5.6 1/500 100 35mm.    
  F5.6 1/320100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 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, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
  Comparison Photo # 7  
Photo_4200Tokina 28-70mm. F2.8  
against
Photo_4258 Sigma 17-70 F/2.8-4 DS Macro HSM
F6.3 1/320 100 35mm.    
  F6.3 1/250100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 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, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
  Comparison Photo # 8  
Photo_4201Tokina 28-70mm. F2.8  
against
Photo_4259 Sigma 17-70 F/2.8-4 DS Macro HSM
F7.1 1/320 100 35mm.    
  F7.1 1/200100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 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, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
  Comparison Photo # 9  
Photo_4202Tokina 28-70mm. F2.8  
against
Photo_4260 Sigma 17-70 F/2.8-4 DS Macro HSM
F8.0 1/250 100 35mm.    
  F8.0 1/160100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 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, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
  Comparison Photo # 10  
Photo_4203Tokina 28-70mm. F2.8  
against
Photo_4261 Sigma 17-70 F/2.8-4 DS Macro HSM
F10.0 1/160 100 35mm.    
  F10.0 1/100100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Tokina 28-70mm. F2.8 F/10.0 vs. Sigma 17-70 F/2.8-4 DS Macro HSM F/10.0 for locations Center, Corner (Top Right), Border (Top), Between Center and Top Left Corner, Around Center, vignetting
  EXIF  
 
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Related Comparisons
Minolta 28-70 2.8 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-50 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-50 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-55 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-55 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-55 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 17-50 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 17-50 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 17-50 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 17-50 vs. Sony 18-55
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-105 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-105 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-105 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-105 vs. Sony 18-55
Sharpness at 35mm.
Tested Apertures F5, F5.6, F6.3, F7.1, F8, F10
Sony 16-105 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 18-200 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 18-200 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 18-200 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 18-200 vs. Sony 18-55
Sharpness at 35mm.
Tested Apertures F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 18-200 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 18-200 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Minolta 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
Sigma 17-70 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Sony 18-55
Sharpness at 35mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
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, F10
Sigma 17-70 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Tokina 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Sony 18-55
Sharpness at 35mm.
Tested Apertures F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sony 18-200 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
  

 

  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
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 55mm.
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