How much of a photo do you need to alter to avoid copyright infringement? Hint: Cheshire Cat

Bloggers and artists often ask, “how much of a photo do you need to alter to avoid copyright infringement?”   Five changes? Fifteen?  The Seventh Circuit addressed the issue in the Kienitz v Sconnie Nation case recently.

http://fairuse.stanford.edu/2014/12/22/much-photo-need-alter-avoid-copyright-infringement-hint-cheshire-cat/