There is an interesting (ha ha) article in Fotoritim, an online photography magazine. You can go there at: http://www.fotoritim.com or follow a couple of links below: http://www.rit.edu/~andpph/photofile-misc/fotoritim-3A.jpg (Turkish) http://www.rit.edu/~andpph/photofile-misc/fotoritim-4A.jpg (English) ;) Andy
