The Rodenstock 4x Neutral Density Glass filter for the 300mm f5.6 Imagon lens has several uses and offers the possibility to achieve otherwise unachievable results. ND filters appear grey and reduce the amount of light reaching the film. They have no effect on color balance.
| Type | Neutral Density |
| Size | Drop in for 300mm f/5.6 Imagon lens |
| Grade | 0.6 |
| Filter Factor | 0.6 (2-Stops) |
| Multi-Coated | No |
| Rotating | No |
| Effect | ND filters appear grey and reduce the amount of light reaching the film, they have no affect on color balance |
| Application | To use high speed films in bright sun |
| Color Temperature | Not applicable |
| Construction | Glass |