Neil,
X-Rite updated i1Profiler for M1 Macs last spring. I've only had an M1 Mac for 10 days, but so far I'm seeing no issues with i1Profiler and my Eizo monitor.
I use Capture One but I haven't run into the bug that PetaPixel talks about in a March 17th article titled Apple Mac Studio with M1 Ultra: Insane Power for the Price. I don't import large numbers of photos at a time, and in any event I use Photo Mechanic for imports. Anyway, here's what PetaPixel says:
As we noted in our review of the MacBook Pro last year, there is a known bug in Capture One on M1 computers. Import times of Phase One files are notably worse than on comparable machines, and that doesn’t change with the M1 Ultra and this latest version of Capture One. While it is about ten seconds faster, it’s still more than a minute behind the Threadripper PC and significantly slower than the top-performing PC laptops.
Capture One is aware of the issue but hasn’t been able to provide a timeline for when a fix should be expected. The company does note that the design of the application does not necessitate waiting for all previews to be generated, however, since they will generate in the background. Still, it doesn’t look great in benchmarking.
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