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Autofocus Sony A7 III vs A6400, A6600, A7R IV.

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Hello fellow photographers,

I am a amateur wildlife photographer. I am interested to switch from Canon to Sony.
I am having some problems making the dissicion which camera i should buy. I am going for the Sony 200-600 lens but do not know what camera I should use with it. The a6400 and a6600 have the new autofocus system, but are very small and miss some important features for me. But the Sony A7R IV is to expensive for me. Here is my question: Did the Sony A7 III get the same new autofocus system as the a6xxx and the A7R IV in the most resent firmware update. 

I would be very happy if someone could help me out choosing the correct camera for my needs.


Kind Regards,


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Hi Tim,

As far as I know the both a quite similar. Both feature eye autofocus for humans and animals, but only the a6600 has eye autofocus in video mode. The a7iii on the other hand has more focus points, covering a little more of the screen.

Main difference to decide on is the crop factor, which has its advantages and disadvantages...

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  • 4 weeks later...
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Hi Tim, 

      Best bet for wildlife photography is the a6400. I shoot mostly Birds.. birds on perch has a very good resolution in a6400  with 200 600mm. Birds in Flight can be use to but quite challenging and must have some skillful technique, but if you made good focus, the resolution is great.. I mostly use the a9 in birds in flight for great percentage of autofocus..

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