Currently I have a Canon 60D, but after carrying it with me on a trip I have started to think about a lighter camera. I want the camera to be easier to carry around for long sightseeing/tourism trips, but still be customizable with lenses. Therefore I have started to look at mirrorless cameras.
As I have a Canon camera it would be nice to be able to use my old lenses on the new mirrorless camera. Canon has an official adapter for using EF and EF-S on their mirrorless cameras, but I have read that the focusing is slower when using this adapter than the native (EF-M) lenses.
Also when looking for mirrorless cameras on the internet there seem to be other brands which offers good cameras, where you can use third party adapters for connecting Canon lenses to them. But also for these adapters, I heard there can be some focusing problems.
My questions is: will my lenses work worse on mirrorless cameras from other brands than on Canon's own mirrorless cameras? Slower focus and/or other problems? Does anybody have experience with this which they can share?