Sony a9 vs a7R IV autofocus

Started 3 months ago | Discussions thread
Luis Gabriel Photography
Luis Gabriel Photography Senior Member • Posts: 2,317
Re: Sony a9 vs a7R IV autofocus

Poefolk wrote:

Deciding between picking up a Sony a9 or an a7R IV and looking for input from those who have used both cameras.

How does the autofocus of these two bodies compare? Is the a9 still noticeably faster and more accurate than the RIV? Is the a9 10% faster & more accurate? 20%?

The resolution of the a7R IV is amazing, but the speed and better high iso performance of the a9 is also amazing.

I guess if the a7R IV has comparable autofocus (not a significant difference), I'd probably be inclined to get one over the a9.

I have both..the A9 is definitely faster and more accurate but you also have to consider that 61MP will show any focus errors more than 24MP so that is another thing going against the R4

 Luis Gabriel Photography's gear list:Luis Gabriel Photography's gear list
Sony RX10 IV Sony a9 Sony a7R IV Sigma 105mm F1.4 DG HSM Art Sigma 35mm F1.2 DG DN +5 more
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