A new Yongnuo 50mm f/1.8 RDF DSM lens is coming for Canon. The available information shows that the lens allows an automatic exposure setting suitable for Canon RF mounts. However, at the moment, we don’t have any information that the lens also features an auto-focusing system or if it’s a manual focus lens. Since Canon doesn’t allow third-party lens makers to build or sell auto-focus lenses for the RF Mount, we will post more updates soon.
Yongnuo announced YN85mm F1.8 Lens for Canon 2 years ago, but after Canon officially announced that Canon RF Mount is locked and no third-party lens maker is allowed to make AF lenses, the 85mm F1.8 production was stopped and no longer its available.
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source weibo