Camera manufacturers increasingly like to crow about ISO ranges when launching a new camera, with high ISO numbers now reaching into the hundreds of thousands. But what do these numbers really mean?

ISO stands for the International Organization for Standardization. It's an organisation that sets and maintains industrial and commercial standards for the photography market and various other markets ...

A few weeks ago, I wrote that photography is often called "painting with light." In response, a reader asked me what you do when there isn't any--light, that is. Well, unless you're shooting inside a ...