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Forums > Back > next PZ lens test report: Sony FE 70-200mm f/4 G OSS
Klaus
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#24
06-16-2014, 02:02 PM
Example AF sensitity range:

 

Sony A6000: 0-20EV

Nikon D7100: -2-19EV

 

Now you may ask yourself why's the D7100 so much better in low light ? We are talking about a sensitivity that is 200% higher on the DSLR. Maybe think about the size of the AF photodiodes in these different approaches. 

 

This is a DSLR AF module:

http://imaging.nikon.com/lineup/microsit..._n3_03.jpg

Solely made for just one purpose.

 

Just a technical explanation, please. Thus why is a dedicate AF sensor array worse than an embedded AF sensor array in the image sensor ?

 

I am always willing to learn something new.
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next PZ lens test report: Sony FE 70-200mm f/4 G OSS - by davidmanze - 05-22-2014, 02:39 PM
next PZ lens test report: Sony FE 70-200mm f/4 G OSS - by Klaus - 06-16-2014, 02:02 PM

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