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  Comparison # 2899 
  
Lens Sharpness Comparison

Sigma 28-70 F/2.8-4 vs. Sony 24-240(E)
Sharpness at 70mm.
Tested Apertures F4/F5, F5.6, F8, F16
 
Comparison by Sinan Ozturk   
PhotoAgainst Photo Editor's Comment: Sigma 28-70 mm f/2.8-4 is actually an "A mount" lens. For this comparison, its plugged into a Sony A7R camera with Sony LA-EA4 adaptor.
  
  
  Comparison Photo # 1  
Photo_5950Sigma 28-70 mm f/2.8-4  
against
Photo_5946 Sony FE 24-240mm F3.5-6.3 OSS
F4.0 1/3 100 70mm.    
  F5.0 1/2100 69mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sigma 28-70 mm f/2.8-4
Center
F/4.0
Brightness 55
(Almost Same)
Sigma 28-70 mm f/2.8-4
Corner (Bottom Right)
F/4.0
Brightness 56
(Almost Same)
Sigma 28-70 mm f/2.8-4
Between Center and Top Right Corner
F/4.0
Brightness 40
(Almost Same)
Sigma 28-70 mm f/2.8-4
Around Center
F/4.0
Brightness 71
(Exactly Same)
Sony FE 24-240mm F3.5-6.3 OSS
Center
F/5.0
Brightness 49
(Almost Same)
Sony FE 24-240mm F3.5-6.3 OSS
Corner (Bottom Right)
F/5.0
Brightness 55
(Almost Same)
Sony FE 24-240mm F3.5-6.3 OSS
Between Center and Top Right Corner
F/5.0
Brightness 38
(Almost Same)
Sony FE 24-240mm F3.5-6.3 OSS
Around Center
F/5.0
Brightness 71
(Exactly Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 2  
Photo_5951Sigma 28-70 mm f/2.8-4  
against
Photo_5947 Sony FE 24-240mm F3.5-6.3 OSS
F5.6 10/16 100 70mm.    
  F5.6 1/2100 69mm.  
100% (1:1) Crop Samples
Sigma 28-70 mm f/2.8-4
Center
F/5.6
Brightness 63
6% Brighter
Sigma 28-70 mm f/2.8-4
Corner (Bottom Right)
F/5.6
Brightness 69
5% Brighter
Sigma 28-70 mm f/2.8-4
Between Center and Top Right Corner
F/5.6
Brightness 50
5% Brighter
Sigma 28-70 mm f/2.8-4
Around Center
F/5.6
Brightness 85
(Almost Same)
Sony FE 24-240mm F3.5-6.3 OSS
Center
F/5.6
Brightness 49
6% Darker
Sony FE 24-240mm F3.5-6.3 OSS
Corner (Bottom Right)
F/5.6
Brightness 57
5% Darker
Sony FE 24-240mm F3.5-6.3 OSS
Between Center and Top Right Corner
F/5.6
Brightness 39
5% Darker
Sony FE 24-240mm F3.5-6.3 OSS
Around Center
F/5.6
Brightness 76
(Almost Same)
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 3  
Photo_5952Sigma 28-70 mm f/2.8-4  
against
Photo_5948 Sony FE 24-240mm F3.5-6.3 OSS
F8.0 13/10 100 70mm.    
  F8.0 1/1100 69mm.  
100% (1:1) Crop Samples
Sigma 28-70 mm f/2.8-4
Center
F/8.0
Brightness 63
6% Brighter
Sigma 28-70 mm f/2.8-4
Corner (Bottom Right)
F/8.0
Brightness 79
7% Brighter
Sigma 28-70 mm f/2.8-4
Between Center and Top Right Corner
F/8.0
Brightness 53
5% Brighter
Sigma 28-70 mm f/2.8-4
Around Center
F/8.0
Brightness 86
5% Brighter
Sony FE 24-240mm F3.5-6.3 OSS
Center
F/8.0
Brightness 48
6% Darker
Sony FE 24-240mm F3.5-6.3 OSS
Corner (Bottom Right)
F/8.0
Brightness 60
7% Darker
Sony FE 24-240mm F3.5-6.3 OSS
Between Center and Top Right Corner
F/8.0
Brightness 40
5% Darker
Sony FE 24-240mm F3.5-6.3 OSS
Around Center
F/8.0
Brightness 75
5% Darker
Display crops in Black & White
  EXIF  
 
  Comparison Photo # 4  
Photo_5953Sigma 28-70 mm f/2.8-4  
against
Photo_5949 Sony FE 24-240mm F3.5-6.3 OSS
F16.0 5/1 100 70mm.    
  F16.0 4/1100 69mm.  
100% (1:1) Crop Samples
Login or Register to display 4 crops from Sigma 28-70 mm f/2.8-4 F/16.0 vs. Sony FE 24-240mm F3.5-6.3 OSS F/16.0 for locations Center, Corner (Bottom Right), Between Center and Top Right Corner, Around Center
  EXIF  
 
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  Other Comparisons of Sigma 28-70 mm f/2.8-4  
Sony 28-70(E) vs. Sigma 28-70 F/2.8-4
Sharpness at 70mm.
Tested Apertures F4/F5.6, F5.6, F8, F16
  Other Comparisons of Sony FE 24-240mm F3.5-6.3 OSS  
Sony 28-70(E) vs. Sony 24-240(E)
Sharpness at 70mm.
Tested Apertures F5/F5.6, F5.6, F8, F16
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