Nauticam EMWL Focusing unit (Canon)

The first piece that attaches to the underwater housing to the optional relay lens is the focus unit

The EMWL allows you to shoot macro, wide-angle and combine the styles to create images we only dreamed about previously! The EMWL was built to work with several popular macro lenses (listed below) and is optimized for both stills and video. It is a wet mount design so the lens can be attached and removed underwater. This increases the versatility of the entire system and other accessories like SMC and CMC macro converters can also be used. It is a modular design with three individual pieces that make up the EMWL, the Focusing Unit, the Relay Module and the Objective Lens. Nauticam has made components optimized to work with different camera manufacturers and their macro lenses, as well as choices for three unique perspectives.

More information about the EMWL system is explained in this blog post.

Compatibility

Canon EF 100mm f/2.8L Macro IS USM and the Canon EF-S 60mm f2.8 Macro USM for APS-C

This part is the objective Focus Unit Only.You need to combine it with a relay lens and objective lens unit! You got yourself a probe microscope lens for catching those close-ups without scaring of your objects.