Here’s a very thorough introduction to a very important part of the exposure process. Check it out below! Source: Photography’s Basics: ISO Share this:TwitterFacebookGooglePinterestTumblrLinkedInEmailLike this:Like Loading... Written by The Twilit Lens Freelance photographer and ponderer of the unusual. I welcome the presence of mystery and the unknown. Wonder is not absent from the universe, and there is still room for the child in those who haven't yet allowed their hearts to wither to dust.