Testing just now . Did a restart. On bluetooth with earbuds connected and playing music , turned on strava to clock walking with internet opened in background. Display full manual brightness. Turned on photo pro in auto mode throughout and kept half pressing the shutter . Did a few shots and reviewed . I stopped my strava and it state 29 minutes .
Phone is warm like normal charging warm feeling . Display either dimmed a bit during photo pro (around 100 to 200 nits )or did not dim at all. It's difficult to judge but I compared with my xperia 5IV and very little difference or , the display displayed different colors which made it seen more dim ( yes xperia 1v display more color difference and likely accurate).
Conclusion is : Outstanding !!! But if it were vapour chamber probably might go down a few degrees more??
Anyway some shots along my trial route :
125mm can't move back further. Will touch wet grass.
stupid wind. Kept shaking... 125mm
50mm
50mm.
125mm.