I've just received this lens and run a few initial tests: it fits fine, just needs to be mounted from the front just like the Olympus 12-40mmF2.8Pro:
Here is a blog post with video
So, I am happy to report that it does fit – and while Nauticam have yet to confirm optimum port options, I reckon the 180mm dome with the correct adapter/spacer will work, just as it does for the Panasonic 7-14mm. Looking forward to testing this underwater...
- EspenB likes this