There are screenshots taken from 4K video shot in the middle of the day at 30fps using P-log.
They may have a resolution of 4K, but they certainly don't resolve a 4K-level of detail. There is a TON of smearing going on.
You can see the whole gallery here (the last four with the punchy color are from a GoPro Hero 4 Silver at 1080p):
Anafi and GoPro Sample Shots - fuzzybabybunny
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By comparison, these are 1080p GoPro Hero 4 screen grabs shot using 60fps and ProTune. The level is detail I would say is on par with the 4K Anafi:
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