It's a 13mm lens! On a phone! The sensor is smaller than my smallest fingernail! It's a miracle it works at all...the quality just doesn’t hold up in 2019.
"Hi. I'm going to say the camera quality isn't as good as it should be in 2019 but am not going to provide any evidence for that. Good day."I’m not going to argue with people
I think we need to keep a bit of perspective. The photos from any of the lenses are loads better than those from the film cameras I had when I was young (none of which had anything like as wide as a 13mm lens, by the way), plus they're in my pocket all the time. Are they as good as photos from a DSLR? No. Do I care? No, because my DSLR is not in my pocket all the time. For most people any modern smartphone photos are good enough (and, to be honest, probably have been for a couple of phone generations now).
You wouldn't put a 24mm prime on a DSLR and say it halved the sensor resolution vs a 50mm on the same camera. The ultra-wide is 12MP like the other two: the resolution is the same. Anything from 1m to infinity is in focus for the ultra-wide camera (confirmed by the developers of Halide), so apart from for close-ups (not the intended use of this lens) it doesn't need to focus anyway. Stabilisation is pretty much pointless for most applications on a lens that wide. The other two lenses don't have deep fusion yet either.Because Apple went 12 mp across the board (possibly so they could save money on both the camera lenses and by only providing 4GB RAM) then the ultra-wide starts with a quarter of the resolution of the standard wide. Add in no support for focus, stabilisation, and deep fusion, and it has no chance of competing.