Not sure that wearing the camera is the right word, but with new features, 4-6 years in camera "cycle" brings HUGE evolution steps, while lenses tends to taek much longer to make such huge lhow cameras bodies evolved since while the RF 28-70 still eap. the RF 28-70 F2 was introduced with the first RF camera, while the 28-70F2 still didn't get mark-II
i am not so much into video, but what would cause me to buy another camera after r52?
* better rolling shutter/global shutter? yes. but r52 is way better than r5 which is way better than 5d4. i still havent bought the A93.
* better operation in hot summer days? maybe, r52's thermometer gets to about 1/2 during august sports shoots @ 12 FPS w/precapture.
* faster card writes? maybe, if i decide that something more that 12 FPS is practicable.
* dual cfe? probably not.
* higher resolution? no. both 45 and 30 are enough for me.
* better auto-focus? maybe but r52 is pretty good, and r5 was not bad and i did ok with 5d4 and 5d2.
* foveon? this sounds super cool to me also.
* better dynamic range? is 2 stops better even possible?
* better battery life? possible, i carry 4 batteries for r52 and only carried 2 for 5d4.
* square sensor? i like the idea, but RF mount contacts are probably in the way.
* super nifty software? photo-pro could be better for sure, wish it could do all the stuff the phones do...
* support for magic lantern / other open firmware development?