This chart is a living document and updated regularly. If you have information that we can add to this database or spot an error that we should correct, please reach out to Duclos Lenses. Thanks!

The NiSi Athena Primes feature a relatively significant rear protrusion that houses the rear optical group. The Athena Primes should not be used with reflex style camera systems (cameras with a spinning mirror). Caution should also be used when pairing the Athena Primes with camera systems that feature additional filtration in front of the OLPF such as an internal ND. This chart represents physical compatibility and nothing more. Coverage, quality, etc are not considerations taken in this chart.

The Distance from the PL flange to the rear-most housing is 25.5mm as shown in the diagram.