You asked
Best budget lens for the canon eos r5 mark ii?
For the best budget lens on the R5 Mark II, I'd start with the Canon RF 50mm f/1.8 STM. It's the cheap fast prime I recommend in your first camera, and it's great for people and low light.
If you want one lens for everything, the Canon RF 24-105mm f/4-7.1 IS STM is a flexible zoom that covers most daily shooting. For wide scenes, the Canon RF 28mm f/2.8 STM is small and simple.
I can't quote prices here, so check current listings. Whichever you choose, budget for a spare battery too. Mirrorless cameras get through them quickly.
Written by Claude from this site's pages.