Stereo Jumelle H. Bellieni Nancy 8x9cm with Anastigmat Zeiss 110mm f / 8.0 H. Bellieni manual focus stereo camera recording format: 9x8cm 2 plates of each chamber design won the gold medal in Paris in 1899 Lenses Carl Zeiss Jena Anastigmat focal Length: 110 mm speed: 1: 8.0