The Sigriste 9×12
Fine example of the 9x12 cm format of the "jumelle photographique à rendement maximum" designed by the wildlife painter Jean Guido SIEGRIST. The very ingenious shutter system enabled shutter speeds of up to 1/10000 of a second to be attained. This depended upon the position of the camera and the adjustment of the width in the shutter curtain that passed only 1/10th cm over the over the sensitised plate. As indicated in the 1903 catalogue and the advertising herewith, the camera could be equipped with all sorts of lenses, depending on the customer's needs. In this case, the lens is the famous Zeiss Tessar, that appeared in 1902, and was reputed for its sharpness.