Went to the Hardware store today and bought myself a peephole. Here's what you do to make a $7.00 fisheye Lens!!! Traced the inside of your spare camera hood on a scrap piece of wood. Then find the center of the circle to drill out the hole for the peep, you'll also need a spacer, because of the length of the peephole. Screw together the peephole and push the round into the hood, snap on the hood and go shooting!!