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  Test # 531 
 
Camera ISO Test

Sony A7s ISO Test

ISO 3200 vs. ISO 409600
 
Test by Sinan Ozturk   
Sony A7's maximum ISO is a jaw droping 409600.

These shots are taken in pitch black darkness (in which camera was able to autofocus on its own) with its maximum ISO vs. ISO 3200.

Yes, I admit ISO 409600 is unusable but come on, its ISO 409600! Even my professional photo editor software is not able to handle it properly, it thinks a camera can not shoot with so high ISO and its stuck in 65535.

With it camera shutter speed was 1/40s even in pitch black which makes even hand held shots possible.
            [Review by Sinan Ozturk]
  
  
  Comparison Photo # 1  
Photo_1077Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA  
against
Photo_1076 Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA
F1.8 10/1 3200 55mm.    
  F1.8 1/40409600 55mm.  
Photo by Sinan Ozturk  Photo by Sinan Ozturk 
100% (1:1) Crop Samples
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA
s
ISO 3200
Brightness 81
(Almost Same)
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 3200
Brightness 78
10% Darker
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 3200
Brightness 70
7% Brighter
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 3200
Brightness 13
(Almost Same)
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 3200
Brightness 76
5% Brighter
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA
s
ISO 409600
Brightness 84
(Almost Same)
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 409600
Brightness 105
10% Brighter
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 409600
Brightness 51
7% Darker
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 409600
Brightness 15
(Almost Same)
Sony A7s + Sony Sonnar T* FE 55mm f/1.8 ZA

ISO 409600
Brightness 63
5% Darker
Black & White crops are displayed for better details study.
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ISO Test, ISO 200, 500, 800, 1000, 2000, 5000, 8000, 16000, 20000