Samsung flagship camera systems always employ the latest tech @Haytch
, and year on year improvements in image quality will always be minimal to my eyes despite the Megapixel chasing. Much of the improvementr are down to software improvements as opposed to hardware ones. My S21 Ultra has a 40Mp selfie camera but I have no doubt that the software tweaking on the 12Mp S23 Ultra's selfie camera will allow it to take better images, but the ability to zoom in on these images will be reduced. As far as screen brightness goes, 1750 nits is more than enough for anyone in my opinion. A 200Mp camera using full resolution on a 2000 nits screen could possibly result in thermal issues to the point that the screen could have to dim outside in bright sunlight when using the camera, like on IPhone flagships where the dimming can occur after only a few minutes when shooting 4K60 video for example.