A confirmed physical connection and an unknown movie AF field are compatible statements. Unknown means missing evidence, not a negative verdict.
Make the exact-model decision
Open the linked source, compare its exact model and firmware scope, then report any mismatch. Ask for the rear mount, model code and firmware before comparing used listings. Budget for the exact adapter and filter accessories, not just the lens.
A manufacturer example
Canon’s EOS R6 Mark II support page separates native RF/RF-S lenses from EF/EF-S lenses that require an EF-EOS R adapter and excludes EF-M from that adapter route. Use the linked page for its stated model and revision; a different model may need a different support document.
Where to draw the line
A seller’s short description and photos cannot replace a manufacturer compatibility table or a safe physical test with return rights. If a source does not address the exact feature you need, record that feature as unknown rather than treating silence as support or incompatibility.
Your next step
Take the model code from the body or lens label, open the official source below, and compare its scope with the equipment you have. Then use the search exact model codes to organize what is known. Do not mount an item that resists or appears on a maker’s exclusion list.
Official sources and scope
Checked for this reference on October 30, 2026. Product firmware and support lists can change; inspect the current maker page for your exact revision.