Meike MK-EFTR-A Auto Focus Lens Adapter -EF EF-S lens to EOS-R Camers such as Canon EOS R RP R5 R6 R7 R10 C70 and RED Komodo

It works , even in macro mode - with macro lenses . . .

Do this adapter compatible with Tamron A011/A022 (150-600mm f/5-6.3), Sigma 150-600mm F5-6.3 DG DN OS and Sigma 150-600mm F5-6.3 DG OS HSM ?

I have Canon Mount Adapter EF - EOS R with control ring for EOS R5 and it's working with all my EF lenses (7 lenses) except my trusty EF 100-400 L MKI. It's working for 1-2 shots and then I'm getting Err 01. 100-400 is not my most used lens so upgrade to RF 100-500 is not for me. I still using it on my old 5D Mark III and love it. Wanted to try it with most simple adapter (without control ring) so after reading positive reviews ordered Meike MK-EFTR-A adapter, got it and Voila!!! The magic happened - my Canon EF 100-400 L MKI now working on Canon R5. Thank you, Meike!!!