I am so glad I finally went for the Max with 48GB
Just exporting a not that big batch of pictures in lightroom a couple of days ago (around 500 pics), the memory pressure went yellow and even have 1.24 GB of swap. If I had gone 24GB, it should have been MUCH slower.
AI noise reduction for my Canon R5 files takes 15s or less with this computer.
Everything is super fast, I am loving it.
I am suspecting that this M3 Max unbinned 40 GPU 48GB ram is better than M4 Max binned 32 GPU 36GB ram even for just photography, let alone the M4 Pro...