DPI, PPI, image resolution explained

See this Usenet thread in rec.photo.digital from 1999

Illustrated article: “Calculating DPI”

PPI vs DPI and a discussion on photo scanning and image scans

First published on March 8th, 2009 at 4:20 pm (EST) and last modified on March 8th, 2009 at 4:21 pm (EST).