RF100-500 won't auto focus at 500mm

[Sadie1]

Hoping someone can advise me on an issue I’m experiencing with the RF 100-500.
If at 100mm it focuses quite quickly. If at 500mm I lose shots due to I have to manually focus it. It doesn’t matter if shooting a BIF with a blue sky or if shooting bird houses.
I’ve noticed using the RF800 - it obtains focus much quicker.
Lenses mounted to the R5
Thank You

[Sadie1]

Hi - Canon found an issue with the R5 but no issues found with lens.

[osya_bender]

Did it resolve the foccusing problems?

[Curoxima]

I had the same problem with an EOS R5 mounted with RF 100-500.

[shadowsports]

Greetings,

Since this topic is 3 yrs old and hasn't received any replies since 2021, may I ask that you please start a new topic if you'd like help with your R5 and RF 100-500.  My experience has been quite different.  This camera lens combo has been absolutely wonderful for me.  We are happy to help and answer any questions, so please help by starting your own topic.  Thanks in advance.  😀