I use several EF lenses on my Canon mirrorless. They tend to focus faster then on the old SLRs (and this is on the EOS-R which has the least sophisticated focus

I use several EF lenses on my Canon mirrorless. They tend to focus faster then on the old SLRs (and this is on the EOS-R which has the least sophisticated focusing). They’re cheaper but you have to carry an adapter.