I can confirm that this is perfectly normal Tomic-X. Same on my Exynos S21 Ultra. It has one powerful camera set up and when you start shooting pics or videos that are being processed as you shoot, on a brightened screen, your phone battery will take a hammering for sure. Gone are the days of the 21U overheating just 5 minutes into opening the camera app though, so please don't worry and just enjoy your phone and it's camera to the max. 👍