Sirui is going to announce their first autofocus full-frame lens on October 25. The lens will be an f/1.4, but the focal length is not yet known. Sirui currently makes autofocus lenses for APS-C, but not for the RF mount as of yet. They are all an impressive f/1.2. They are also at or below [...] Source...
Published By: Canonrumors - Monday, 21 October