Canon's mirrorless lenses have been very well received and lauded for their high optical quality, but they are also quite expensive. Can you get good results by adapting some of their older and much cheaper lenses instead? This great video shows you what you can accomplish with one of their most legendary older lenses.
Coming to you from Christopher Frost Photography, this excellent video discusses adapting the FD 85mm f/1.2L lens to the EOS R. One of the best aspects of mirrorless cameras is their ability to adapt a wide variety of legacy lenses. It is worth noting that you can get the EF 85mm f/1.2L (Mark I or Mark II) for around $800 or so on the used market, and with that, you will get autofocus capabilities. In fact, many users have reported that autofocus of EF lenses is even better with RF cameras than with EF cameras, as it is just as fast (you don't have adapter issues since all components are first party) and more accurate due to the advantages of the mirrorless system. The FD version is still cheaper, but if you want autofocus capabilities, a used copy of the EF version is still significantly less than the RF version. It all comes down to your budget and needs. Check out the video above for Frost's full thoughts.