We now have one of these 4X5 3" Leonardo Pinhole cameras in stock. Designed by Eric Renner. Wooden camera with brass shimstock micro-drilled laser pinhole measuring approximately .012 inch (will give f/250). Accepts 4x5 film holders and the Polaroid 545i and 545 backs. Features a moveable shutter, a positive locking film holder mechanism and two tripod mounts. Wide angle, with a 3" focal length and view of 75 degrees (the same as 28mm lens on a 35mm camera).