A. Schacht Ulm Travenar R 50 mm f/ 2.8 M42 Mount로 미약하지만 버블 보케가 인상적이다.Lens Specifications:Format: 35mm SLRType: Prime lensFocusing: Manual Focus (MF)Lens mounts: M42, Exakta, Other mountOptical design: 4 elements in 3 groups Focal lengthMax.apertureMin.apertureBladesMin. FocusFilter ØWeightLength50mmf/2.8f/2260.5m49mm192gr