Does anyone have experience using one of the new Canon mirrorless cameras (R5/R6) to focus on eyeshine at night? I’ve found the autofocus on the Canon 5DIII/IV to be frustratingly slow to fix on eyeshine, even when an animal is in the open (for example: https://www.tremarctos.com/2021/06/oncilla-2/). The new mirrorless cameras have an eye-tracking option, and I’m wondering if that would help. (I would continue using my old lenses with an adapter.)
Relatedly, does anyone have advice on autofocus settings for eyeshine for Canon?