High quality, silvered back with protective coating.
| Diameter | Focal | Length |
| -01 | 50mm | 100mm |
| -02 | 50mm | 150mm |
| -03 | 50mm | 200mm |
| -04 | 50mm | 300mm |
| -05 | 75mm | 100mm |
| -06 | 75mm | 150mm |
| -07 | 75mm | 200mm |
| -08 | 75mm | 300mm |
High quality, silvered back with protective coating.
| Diameter | Focal | Length |
| -01 | 50mm | 100mm |
| -02 | 50mm | 150mm |
| -03 | 50mm | 200mm |
| -04 | 50mm | 300mm |
| -05 | 75mm | 100mm |
| -06 | 75mm | 150mm |
| -07 | 75mm | 200mm |
| -08 | 75mm | 300mm |
