when your looking you find

Here is the throry: When you know/expect ther to be somthing of intrest in a photograth your likly to find somthing if its there or not. e.g a person looking for the CG in a image will undobltby find it though if they dont expect any it might get by them.

i have noticed this because people oftain walk past my computer and say thigns like "that tables good but it dosnt blend right" to wich i reply "thats the real table in the original image i havent changed anything yet"

Then i found this site:

http://www.facepunch.com/showthread.php?t=403631&page=18

To further my point this image was posted with "can you see it too" and people found hundreds of things in the shot trying to guess, they found aliens, ghost in smoke, faces, eyes it was endless..none of these were the thing it was poster for in this "real" unedited image.

what chance do i have of fooling people if there expecting it?, i will just have to make my work more real then real so that they pick out the natural oddities first.