Model ID CA72 / Ewa-Marine CA72
- Lens holder / The patented CA system was invented & developed by ewa-marine to allow the lens of a camera to be fixed to the front port of a housing or rain cape. It ensures that the surface of the lens & that of the housings front port are permanently parallel to each other, thus ensuring that there are nor reflections or other optical disturbances between these two glass surfaces. Due to the CA system, the front port has the same effect as a clear glass filter would have in everyday photography.