R5 100-500 vs 1DX3 500 f/4

[Jonathan Huyer]

I really liked the versatility of the 100-500, and the ease of handholding. When you're in a hurry, it can make all the difference. But if you happen to have a bit more time, then shooting with a big lens at f/4 makes for much better photos. Even if you have lots of light and the lower ISO makes no difference at all, just being able to blur the background a bit can sure make the subject pop out.

1DX3 with 500 f/4, 1/1600 sec @ f/4, ISO 1000
Pantanal, Brazil