As a A7Rii owner, i have tried using it for photographing birds and its fine if they are fairly static in a tree, but useless when in flight.
Thats with the Sigma 100-400 lens.
I would expect the RX10 to have newer and better AF than an Rii which came out in 2015,
The only thing you gain with the Rii is better ISO performance
Thats with the Sigma 100-400 lens.
I would expect the RX10 to have newer and better AF than an Rii which came out in 2015,
The only thing you gain with the Rii is better ISO performance