... TRANSMISSION: 99.0% 4. DIAMETER:65MM ,70mm,72mm,75mm 1.SPECIFIC GRAVITY: 1.352. ABBE VALUE: ... :70MM ,72,MM,75MM 1.61 optical lens 1.HMC+EMI AR COATING 2.blue, green ... 3.aspheric and spheric available 1.61 optical lens 1. 72mm diameter available 2. HMC+EMI multi-coating , ... 3. blue , green, and golden coating 4. aspheric and spheric available. 5. the lens ...