Canon Knowledge Base - AF (Autofocus) does not work (EOS REBEL T5i / EOS 700D)
Amazon.com : EF-EOS R Lens Adapter Auto-Focus Lens Converter Control Ring Compatible for Canon EF/EF-S Mount Lenses and Canon EOS RP R R5 R6 Cameras : Electronics
AF (Autofocus) does not operate (EOS REBEL T6 / EOS 1300D)
My Camera Won't Focus: Here's What To Do – Brendan Williams Creative