That is an overview of screen resolutions. I don't see how that in 2015 would decide should be "max" size when this can be handled automatically.
Artur wrote:But as soon as I can see, images in "?pop" mode are served in full resolution of a file, not respecting screen size at all (or am I wrong?).
Actually, the popup viewer also calculates in real-time what image should be served to the current device. If you are on a small non-retina iphone, it should not waste bandwidth on serving a full image. However, on large desktops, a modern website should serve satisfactory modern-sized images. I may need to tweak some options here for popup 2.0 which is around the corner, but essentially images are scaled also in the popup.
Artur wrote:Anyways, "Image max" variable has other benefits, as you wrote yourself.
Although we may need to do some tweaks, the only single benefit I can think of is if you are concerned about protecting extra-large size images, but want to upload them anyway to have them serve as resize-base. I can't see any other reason why max-limit would have any usage if we reach a point where a "perfect" image is served for each request.