photojojo:

What *is* ISO exactly? And where does camera noise come from, anyway?
Dylan Bennett (a real smart guy) explains it all in this video about digital sensors and how light works.
What *is* ISO, Really?

important and educational 

photojojo:

What *is* ISO exactly? And where does camera noise come from, anyway?

Dylan Bennett (a real smart guy) explains it all in this video about digital sensors and how light works.

What *is* ISO, Really?

important and educational