The Pinhole lens
Made my own Pinhole lens the other day. its one of the oldest photo techniques,also known as Camera Obscura.you can buy film based Pinhole cameras, but its also possible to make your own for a digital. Cut out a piece of cardboard rougly the diameter of the lensmount. try to find the center and cut out a 1*1 cm hole. cut out a piece of soda can thats a bit bigger than1*1 and sand it down a bit to make it thinner. use a small needle to punch a hole in the soda can aluminium. the thinner the sharper the lens ! Tape the aluminium "optics" to the cardboard. Tape the lens to camera body ! put it in manual and expect long shutters ! mine seems to be about the same focal as a 35mm.