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  Comparison # 110 
 
Lens Sharpness Comparison

Sony 16-105 vs. Sigma 10-20 F4-5.6

Sharpness at 16mm.
Tested Apertures F3.5/F5, F5.6, F8, F11
 
Comparison by Sinan Ozturk   
Both lenses are set to 16mm and on tripod.

At their widest aperture (which is F5.0 for Sigma and F3.5 fo Sony 16-105), Sigma has more vignetting as usual. They are both seems to be doing fine in the corner sharpness. In the corners they look close to eachother but I liked Sony 16-105 just a bit better.

When stopped down to F5.6, Sony 16-105 gets sharper in the center and in the corners they still look close.

At F8, center performans looks exactly same and its also not easy pick the better one for corners. I think we can also tell the same for F11.
            [Review by Sinan Ozturk]
  
  
  Comparison Photo # 1  
Photo_278Sigma 10-20mm. F/4-5.6  
against
Photo_275 Sony 16-105 F3.5-5.6 DT
F5.0 1/800 100 16mm.    
  F3.5 1/1250100 16mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.0
Brightness 182
(Exactly Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.0
Brightness 102
6% Darker
Sigma 10-20mm. F/4-5.6
Around Center
F/5.0
Brightness 78
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.0
Brightness 70
(Almost Same)
Sony 16-105 F3.5-5.6 DT
Focus Point
F/3.5
Brightness 182
(Exactly Same)
Sony 16-105 F3.5-5.6 DT
Border (Left)
F/3.5
Brightness 118
6% Brighter
Sony 16-105 F3.5-5.6 DT
Around Center
F/3.5
Brightness 88
(Almost Same)
Sony 16-105 F3.5-5.6 DT
Corner (Top Left)
F/3.5
Brightness 79
(Almost Same)
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 2  
Photo_280Sigma 10-20mm. F/4-5.6  
against
Photo_276 Sony 16-105 F3.5-5.6 DT
F5.6 1/640 100 16mm.    
  F5.6 1/640100 16mm.  
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Focus Point
F/5.6
Brightness 190
(Exactly Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/5.6
Brightness 114
9% Darker
Sigma 10-20mm. F/4-5.6
Around Center
F/5.6
Brightness 90
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/5.6
Brightness 79
9% Darker
Sony 16-105 F3.5-5.6 DT
Focus Point
F/5.6
Brightness 190
(Exactly Same)
Sony 16-105 F3.5-5.6 DT
Border (Left)
F/5.6
Brightness 137
9% Brighter
Sony 16-105 F3.5-5.6 DT
Around Center
F/5.6
Brightness 98
(Almost Same)
Sony 16-105 F3.5-5.6 DT
Corner (Top Left)
F/5.6
Brightness 103
9% Brighter
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 3  
Photo_281Sigma 10-20mm. F/4-5.6  
against
Photo_277 Sony 16-105 F3.5-5.6 DT
F8.0 1/320 100 16mm.    
  F8.0 1/320100 16mm.  
100% (1:1) Crop Samples
Sigma 10-20mm. F/4-5.6
Focus Point
F/8.0
Brightness 187
(Almost Same)
Sigma 10-20mm. F/4-5.6
Border (Left)
F/8.0
Brightness 125
(Almost Same)
Sigma 10-20mm. F/4-5.6
Around Center
F/8.0
Brightness 95
(Almost Same)
Sigma 10-20mm. F/4-5.6
Corner (Top Left)
F/8.0
Brightness 85
8% Darker
Sony 16-105 F3.5-5.6 DT
Focus Point
F/8.0
Brightness 190
(Almost Same)
Sony 16-105 F3.5-5.6 DT
Border (Left)
F/8.0
Brightness 136
(Almost Same)
Sony 16-105 F3.5-5.6 DT
Around Center
F/8.0
Brightness 97
(Almost Same)
Sony 16-105 F3.5-5.6 DT
Corner (Top Left)
F/8.0
Brightness 105
8% Brighter
Black & White crops are displayed for better details study.
Click here to switch back to colored crops.
  EXIF  
 
  Comparison Photo # 4  
Photo_282Sigma 10-20mm. F/4-5.6  
against
Photo_279 Sony 16-105 F3.5-5.6 DT
F11.0 1/160 100 16mm.    
  F11.0 1/160100 16mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Sigma 10-20mm. F/4-5.6 F/11.0 vs. Sony 16-105 F3.5-5.6 DT F/11.0 for locations Focus Point, Border (Left), Around Center, Corner (Top Left)
  EXIF  
 
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