Most of the people I know are big fans of photo shop, but before PC became part of the family there were alternatives. We all like to play some optical illusions. Not all the people are Salvador Dalli to paint the optical illusion and make some opt art, but with some simple playing with the distance some interesting photos can be made! You should give it a try it is not so difficult, actually it is kind of fun! With or without photo shop you will have the same effect!