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  Comparison # 403 
 
Lens Sharpness Comparison

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
 
Comparison by Sinan Ozturk   
  
  
  Comparison Photo # 1  
Photo_872Tamron 17-50 F/2.8  
against
Photo_846 Sigma 12-24 F4.5-5.6 DG
F2.8 1/1250 100 18mm.    
  F5.6 1/400100 17mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Tamron 17-50 F/2.8
Center
F/2.8
Brightness 122
(Almost Same)
Tamron 17-50 F/2.8
Focus Point
F/2.8
Brightness 114
(Almost Same)
Tamron 17-50 F/2.8
Corner (Top Left)
F/2.8
Brightness 147
(Almost Same)
Tamron 17-50 F/2.8
Between Center and Top Right Corner
F/2.8
Brightness 197
5% Brighter
Tamron 17-50 F/2.8
Around Center
F/2.8
Brightness 157
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Center
F/5.6
Brightness 123
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.6
Brightness 111
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Corner (Top Left)
F/5.6
Brightness 146
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Between Center and Top Right Corner
F/5.6
Brightness 183
5% Darker
Sigma 12-24 F4.5-5.6 DG
Around Center
F/5.6
Brightness 147
(Almost Same)
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_875Tamron 17-50 F/2.8  
against
Photo_846 Sigma 12-24 F4.5-5.6 DG
F4.5 1/500 100 18mm.    
  F5.6 1/400100 17mm.  
100% (1:1) Crop Samples
Tamron 17-50 F/2.8
Center
F/4.5
Brightness 125
(Almost Same)
Tamron 17-50 F/2.8
Focus Point
F/4.5
Brightness 120
(Almost Same)
Tamron 17-50 F/2.8
Corner (Top Left)
F/4.5
Brightness 159
5% Brighter
Tamron 17-50 F/2.8
Between Center and Top Right Corner
F/4.5
Brightness 200
6% Brighter
Tamron 17-50 F/2.8
Around Center
F/4.5
Brightness 163
6% Brighter
Sigma 12-24 F4.5-5.6 DG
Center
F/5.6
Brightness 123
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.6
Brightness 111
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Corner (Top Left)
F/5.6
Brightness 146
5% Darker
Sigma 12-24 F4.5-5.6 DG
Between Center and Top Right Corner
F/5.6
Brightness 183
6% Darker
Sigma 12-24 F4.5-5.6 DG
Around Center
F/5.6
Brightness 147
6% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_876Tamron 17-50 F/2.8  
against
Photo_846 Sigma 12-24 F4.5-5.6 DG
F5.6 1/320 100 18mm.    
  F5.6 1/400100 17mm.  
100% (1:1) Crop Samples
Tamron 17-50 F/2.8
Center
F/5.6
Brightness 123
(Exactly Same)
Tamron 17-50 F/2.8
Focus Point
F/5.6
Brightness 116
(Almost Same)
Tamron 17-50 F/2.8
Corner (Top Left)
F/5.6
Brightness 156
(Almost Same)
Tamron 17-50 F/2.8
Between Center and Top Right Corner
F/5.6
Brightness 197
5% Brighter
Tamron 17-50 F/2.8
Around Center
F/5.6
Brightness 160
5% Brighter
Sigma 12-24 F4.5-5.6 DG
Center
F/5.6
Brightness 123
(Exactly Same)
Sigma 12-24 F4.5-5.6 DG
Focus Point
F/5.6
Brightness 111
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Corner (Top Left)
F/5.6
Brightness 146
(Almost Same)
Sigma 12-24 F4.5-5.6 DG
Between Center and Top Right Corner
F/5.6
Brightness 183
5% Darker
Sigma 12-24 F4.5-5.6 DG
Around Center
F/5.6
Brightness 147
5% Darker
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 4  
Photo_877Tamron 17-50 F/2.8  
against
Photo_847 Sigma 12-24 F4.5-5.6 DG
F6.3 1/250 100 18mm.    
  F6.3 1/250100 17mm.  
100% (1:1) Crop Samples
Login or Register to display 5 crops from Tamron 17-50 F/2.8 F/6.3 vs. Sigma 12-24 F4.5-5.6 DG F/6.3 for locations Center, Focus Point, Corner (Top Left), Between Center and Top Right Corner, Around Center
  EXIF  
 
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Sharpness at 16-18mm.
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Sharpness at 16-18mm.
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Sharpness at 16-18mm.
Tested Apertures F3.5, F4.5, F5.6, F6.3
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Tested Apertures F2.8/F5, F3.5/F5, F4.5/F5, F5.6, F6.3
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Sharpness at 18mm.
Tested Apertures F2.8/F3.5, F3.5, F4.5, F5.6, F6.3
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Sharpness at 17-18mm.
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Sharpness at 16-18mm.
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  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. Sigma 17-70
Sharpness at 28mm.
Tested Apertures F2.8/F3.2, F3.5, F4, 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
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
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.
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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
  Other Comparisons of Sigma 12-24 F4.5-5.6 DG  
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Sharpness at 13mm.
Tested Apertures F2.8/F4.5, F4/F4.5, F5.6, F8, F11, F16, F22
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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. 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
Sigma 12-24 vs. Sigma 10-20 F4-5.6
Sharpness at 13mm.
Tested Apertures F5, F5.6, F8, F11, F16, F16/F22