Please note, I'm not asking what resolution is!
I've processed a raw image and exported from Photoshop, and I've just noticed something in the image details that I've never seen before (I don't think):
Second from last value shown is "Resolution unit" and gives a value of "2". What does this represent?
I found a post on another site which indicates the number means the units of measurement — inches or cm or absolute — is this correct? Can't seem to find much information on this.