Agree that the R50 needs the AD-E1 adapter to use older-style flashes. Without the classic 4 points of contacts none of the older accessories will work.
Where did this information come from? I use the Canon 430 EX-RT III, the Canon ST-E3-RT, the Canon 600 EX-RT, Canon 600 EX RT II, and the Canon EL-5 on my Canon R7, Canon R5 MK II, and except for the Canon EL-5 on my Canon R5. I just shot a session. ...
Where did this information come from? I use the Canon 430 EX-RT III, the Canon ST-E3-RT, the Canon 600 EX-RT, Canon 600 EX RT II, and the Canon EL-5 on my Canon R7, Canon R5 MK II, and except for the Canon EL-5 on my Canon R5. I just shot a session. ...