Interesting read: https://observablehq.com/@eeeps/...

TL;DR: Diminishing returns from higher smartphone resolutions. The visual jump from 1x images to 2x is huge, but more than 2x res images in the img/picture scrset isn't worth the additional loading time.

Apparently, the use of 3x image variants is going to be more of a downgrade than improvement, by mean metric.

@vintprox No, the y axis in the bottom diagram is in log, and lower values mean both better resolution and better visual capability.

The grey DPR3 line is below the mean visual capability, but that doesn't mean worse quality, it means that the resolution is finer than what people can perceive.

@Fast-Nop OK, but by "mean" I wanted to note a combination of visual fidelity *and* time to download. Just being fancy, because I forgot a better word for this.

@vintprox Ah yeah, the "overall user experience" would be worse with DPR3 - no visual improvement, just longer page load.