PHOTO STEREO APPARATUS 6x13 SUMMUM by LOUIS Leulier Paris Soberly and aesthetically pleasing construction of nickel (for the colonies) This model resembles the SUMMUM MINIMUM but with fixed focus. Lens: Anastigmat 1: 6.3 HERMAGIS 3 openings: 6.3 to 8 and 16 Speed: 1 s to 1/150
