The Zero Image 2000 is a wooden medium format pinhole camera designed by Zernike Au http://www.zeroimage.com/). The camera supports multiple image sizes: 4.5x6, 6x6, 6x7 6x9 cm. The notches seen at the top of the Toll Cabin image show where wood baffles are inserted to change the image size. The camera as "red holes" for each size so the film positioning is easy. There is a clever shutter attachment that allows either manual or cable release. An circular slide rule-style exposure calculator is installed on the camera body. Note the light dropoff and distortion seen in these 6x0 format images.