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  Comparison # 2498 
 
Lens Sharpness Comparison

Tamron 17-50 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
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_4876Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4911 Tamron 17-50 F/2.8
F3.5 1/400 100 35mm.    
  F2.8 1/500100 35mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sigma 17-70 F/2.8-4 DS Macro HSM
Around Center
F/3.5
Brightness 96
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/3.5
Brightness 132
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Bottom Left)
F/3.5
Brightness 114
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Bottom Border
F/3.5
Brightness 128
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Vignetting
F/3.5
Brightness 178
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Border (Right)
F/3.5
Brightness 136
(Almost Same)
Tamron 17-50 F/2.8
Around Center
F/2.8
Brightness 100
(Almost Same)
Tamron 17-50 F/2.8
Center
F/2.8
Brightness 127
(Almost Same)
Tamron 17-50 F/2.8
Corner (Bottom Left)
F/2.8
Brightness 126
(Almost Same)
Tamron 17-50 F/2.8
Between Center and Bottom Border
F/2.8
Brightness 129
(Almost Same)
Tamron 17-50 F/2.8
Vignetting
F/2.8
Brightness 186
(Almost Same)
Tamron 17-50 F/2.8
Border (Right)
F/2.8
Brightness 144
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_4876Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4912 Tamron 17-50 F/2.8
F3.5 1/400 100 35mm.    
  F3.2 1/400100 35mm.  
100% (1:1) Crop Samples
Sigma 17-70 F/2.8-4 DS Macro HSM
Around Center
F/3.5
Brightness 96
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/3.5
Brightness 132
5% Brighter
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Bottom Left)
F/3.5
Brightness 114
6% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Bottom Border
F/3.5
Brightness 128
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Vignetting
F/3.5
Brightness 178
6% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Border (Right)
F/3.5
Brightness 136
(Almost Same)
Tamron 17-50 F/2.8
Around Center
F/3.2
Brightness 95
(Almost Same)
Tamron 17-50 F/2.8
Center
F/3.2
Brightness 120
5% Darker
Tamron 17-50 F/2.8
Corner (Bottom Left)
F/3.2
Brightness 130
6% Brighter
Tamron 17-50 F/2.8
Between Center and Bottom Border
F/3.2
Brightness 125
(Almost Same)
Tamron 17-50 F/2.8
Vignetting
F/3.2
Brightness 195
6% Brighter
Tamron 17-50 F/2.8
Border (Right)
F/3.2
Brightness 144
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_4876Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4913 Tamron 17-50 F/2.8
F3.5 1/400 100 35mm.    
  F3.5 1/320100 35mm.  
100% (1:1) Crop Samples
Sigma 17-70 F/2.8-4 DS Macro HSM
Around Center
F/3.5
Brightness 96
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Center
F/3.5
Brightness 132
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Corner (Bottom Left)
F/3.5
Brightness 114
11% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Between Center and Bottom Border
F/3.5
Brightness 128
(Almost Same)
Sigma 17-70 F/2.8-4 DS Macro HSM
Vignetting
F/3.5
Brightness 178
11% Darker
Sigma 17-70 F/2.8-4 DS Macro HSM
Border (Right)
F/3.5
Brightness 136
9% Darker
Tamron 17-50 F/2.8
Around Center
F/3.5
Brightness 104
(Almost Same)
Tamron 17-50 F/2.8
Center
F/3.5
Brightness 130
(Almost Same)
Tamron 17-50 F/2.8
Corner (Bottom Left)
F/3.5
Brightness 143
11% Brighter
Tamron 17-50 F/2.8
Between Center and Bottom Border
F/3.5
Brightness 136
(Almost Same)
Tamron 17-50 F/2.8
Vignetting
F/3.5
Brightness 206
11% Brighter
Tamron 17-50 F/2.8
Border (Right)
F/3.5
Brightness 157
9% Brighter
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_4877Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4914 Tamron 17-50 F/2.8
F4.0 1/320 100 35mm.    
  F4.0 1/250100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/4.0 vs. Tamron 17-50 F/2.8 F/4.0 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 5  
Photo_4878Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4915 Tamron 17-50 F/2.8
F4.5 1/250 100 35mm.    
  F4.5 1/200100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/4.5 vs. Tamron 17-50 F/2.8 F/4.5 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 6  
Photo_4879Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4916 Tamron 17-50 F/2.8
F5.0 1/200 100 35mm.    
  F5.0 1/160100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/5.0 vs. Tamron 17-50 F/2.8 F/5.0 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 7  
Photo_4880Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4917 Tamron 17-50 F/2.8
F5.6 1/160 100 35mm.    
  F5.6 1/125100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/5.6 vs. Tamron 17-50 F/2.8 F/5.6 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 8  
Photo_4881Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4918 Tamron 17-50 F/2.8
F6.3 1/125 100 35mm.    
  F6.3 1/80100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/6.3 vs. Tamron 17-50 F/2.8 F/6.3 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 9  
Photo_4882Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4919 Tamron 17-50 F/2.8
F7.1 1/100 100 35mm.    
  F7.1 1/80100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/7.1 vs. Tamron 17-50 F/2.8 F/7.1 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 10  
Photo_4883Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4920 Tamron 17-50 F/2.8
F8.0 1/80 100 35mm.    
  F8.0 1/60100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/8.0 vs. Tamron 17-50 F/2.8 F/8.0 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 11  
Photo_4884Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4921 Tamron 17-50 F/2.8
F9.0 1/60 100 35mm.    
  F9.0 1/40100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/9.0 vs. Tamron 17-50 F/2.8 F/9.0 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 12  
Photo_4885Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4922 Tamron 17-50 F/2.8
F10.0 1/50 100 35mm.    
  F10.0 1/40100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/10.0 vs. Tamron 17-50 F/2.8 F/10.0 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
  Comparison Photo # 13  
Photo_4886Sigma 17-70 F/2.8-4 DS Macro HSM  
against
Photo_4923 Tamron 17-50 F/2.8
F11.0 1/40 100 35mm.    
  F11.0 1/30100 35mm.  
100% (1:1) Crop Samples
Login or Register to display 6 crops from Sigma 17-70 F/2.8-4 DS Macro HSM F/11.0 vs. Tamron 17-50 F/2.8 F/11.0 for locations Around Center, Center, Corner (Bottom Left), Between Center and Bottom Border, Vignetting, Border (Right)
  EXIF  
 
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Tested Apertures F1.8/F3.5, F2/F3.5, F2.2/F3.5, F2.5/F3.5, F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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Sharpness at 35mm.
Tested Apertures F1.8/F4.5, F2/F4.5, F2.2/F4.5, F2.5/F4.5, F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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Sony 35mm 1.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F1.8/F3.5, F2/F3.5, F2.2/F3.5, F2.5/F3.5, F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 35mm 1.8 vs. Sony 16-105
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Tested Apertures F1.8/F5, F2/F5, F2.2/F5, F2.5/F5, F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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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
Tamron 17-50 vs. Cosina 19-35
Sharpness at 35mm.
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Tamron 17-50 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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Sharpness at 35mm.
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Sony 16-50 vs. Minolta 35-105mm.
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
Sony 16-50 vs. Cosina 19-35
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Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 16-50 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
Sony 16-50 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 16-50 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2/F2.8, F2.2/F2.8, F2.5/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 16-50 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 28-70 2.8 vs. Minolta 35-105mm.
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
Minolta 28-70 2.8 vs. Cosina 19-35
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 28-70 2.8 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 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
Minolta 28-70 2.8 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 28-70 2.8 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2/F2.8, F2.2/F2.8, F2.5/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 28-70 2.8 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 28-70 2.8 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Minolta 35-105mm.
Sharpness at 35mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Cosina 19-35
Sharpness at 35mm.
Tested Apertures F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F5, F2/F5, F2.2/F5, F2.5/F5, F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 18-55 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Minolta 35-105mm.
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
Tokina 28-70 2.8 vs. Cosina 19-35
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F2.8/F4.5, F3.2/F4.5, F3.5/F4.5, F4/F4.5, 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
Tokina 28-70 2.8 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2/F2.8, F2.2/F2.8, F2.5/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Sony 16-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Minolta 28-70 2.8
Sharpness at 35mm.
Tested Apertures F2.8, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tokina 28-70 2.8 vs. Sony 18-55
Sharpness at 35mm.
Tested Apertures F2.8/F5, F3.2/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11

 

  Other Tamron 17-50 F/2.8 vs. Sigma 17-70 F/2.8-4 DS Macro HSM Comparisons  
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
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. Tamron 17-50
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
Tamron 17-50 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
Sigma 17-70 vs. Tamron 17-50
Sharpness at 50mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Tamron 17-50 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
Sigma 17-70 vs. Tamron 17-50
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3
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
Tamron 17-50 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
Tamron 17-50 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
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. Tamron 17-50
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F6.3, F8, F10
Tamron 17-50 vs. Sigma 17-70
Sharpness at 50mm.
Tested Apertures F2.8/F4, F4, F5, F5.6, F6.3, F8, F10
Tamron 17-50 vs. Sigma 17-70
Sharpness at 18mm.
Tested Apertures F2.8, F6.3, F8, F16
Sigma 17-70 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8/F3.5, F4, F5.6, F6.3, F8
Sigma 17-70 vs. Tamron 17-50
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F8
Sigma 17-70 vs. Tamron 17-50
Sharpness at 24mm.
Tested Apertures F2.8/F3.2, F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F8
Tamron 17-50 vs. Sigma 17-70
Sharpness at 24mm.
Tested Apertures F2.8/F3.2, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tamron 17-50 vs. Sigma 17-70
Sharpness at 17-18mm.
Tested Apertures F2.8, F3.5, F4.5, F5.6, F6.3
  Other Comparisons of Tamron 17-50 F/2.8  
Tamron 17-50 vs. Sony 16-50
Sharpness at 28mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Tamron 17-50 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
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
Tamron 17-50 vs. Minolta 28-70 2.8
Sharpness at 28mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Tamron 17-50 vs. Sony 16-105
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
Tamron 17-50 vs. Sony 18-55
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
Tamron 17-50 vs. Cosina 19-35
Sharpness at 28mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1
Minolta 28-105 vs. Tamron 17-50
Sharpness at 28mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1
Tamron 17-50 vs. Minolta 35-105mm.
Sharpness at 35mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tamron 17-50 vs. Minolta 28-105
Sharpness at 35mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tamron 17-50 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Cosina 19-35 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
Sony 16-50 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
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
Minolta 28-70 2.8 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Tamron 17-50
Sharpness at 35mm.
Tested Apertures F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 18-55 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
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
Tamron 17-50 vs. Minolta 35-105mm.
Sharpness at 50mm.
Tested Apertures F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
  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
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. 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. 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
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
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. 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
Sony 16-105 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8
Minolta 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 35mm.
Tested Apertures F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 18-55 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
Tamron 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
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, F9, F10, F11
Sony 55-300 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 16-105 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tamron 18-200 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
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, F9, F10, F11
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
Sigma 17-70 vs. Tamron 60
Sharpness at 60mm.
Tested Apertures F2/F4, F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Tamron 18-200
Sharpness at 60mm.
Tested Apertures F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Sony 16-105
Sharpness at 60mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Minolta 35-105mm.
Sharpness at 60mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Sony 55-300
Sharpness at 60mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Minolta 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 60mm.
Tested Apertures F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F10
Sigma 17-70 vs. Tamron 18-200
Sharpness at 70mm.
Tested Apertures F8
Sigma 17-70 vs. Sony 55-300
Sharpness at 55mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sigma 17-70 vs. Minolta 35-105mm.
Sharpness at 55mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sigma 17-70 vs. Sony 18-55
Sharpness at 55mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tamron 18-200 vs. Sigma 17-70
Sharpness at 55mm.
Tested Apertures F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 16-105 vs. Sigma 17-70
Sharpness at 55mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 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 55mm.
Tested Apertures F2.8/F4, F3.5/F4, 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. Minolta 35-105mm.
Sharpness at 70mm.
Tested Apertures F4/F4.5, F4.5, F5, F5.6, F6.3, F8, F10
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, F8, F10
Sigma 17-70 vs. Minolta 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
Tamron 18-200 vs. Sigma 17-70
Sharpness at 70mm.
Tested Apertures F4/F5.6, F4.5/F5.6, F5/F5.6, F5.6, F6.3, F8, F10