I managed to download some iPhone 12 and iPhone 13 DNG. There is some good control of colour and light with the iPhone 12 files, but no Prime or DeepPrime. See below a retouched DNG vs Apple’s default processing. I’ve exaggerated the processing on the DNG to show the richer tones available.
The iPhone 13 RAW files give a loading error.
I haven’t tried iPhone 13 RAW files from third-parties like Moment or FilmicPro (FirstLight) as I don’t have the phone to create them. Perhaps someone else can do those tests.
Glad I have the iPhone 11 Pro Max and didn’t upgrade. Having DxO PhotoLab available for these RAW files makes it much more useful as a carry camera.
Here’s a relatively random picture of a rainbow at the main station in Bratislava on which I did my iPhone 11 tests, post-processing. Distortion, Lens Sharpness, DeepPrime, everything works:
It turns out though that one cannot crop too close to the edges or some green banding will show up which does not show up in the previews. Here’s my original export of that image:
In this case, the crop was right at the edge of the black bars, which are slanted as I used ViewPoint to correct perspective.