A:AnswerNo. RF lenses are not backward compatible. They only work with the new RF cameras. You can buy and adapter for the lenses you own for the M50 to work on a new RF camera though.
A:AnswerNo lens hood and unfortunately I haven’t been able to find the lens hood in stock anywhere either. You can mount a tripod to the lens though (or a tripod quick release mount which is what I use). Hope this helps.