It would also be very helpful if you could specify the maximum lens diameter that can be effectively used within the WACP, perhaps using front filter thread size as a proxy, since this is more widely reported on lenses than the actual diameter. The excellent review by Alex and Jason failed to specify if they were using the Nikon 28-70mm f2.8, which has a 77mm filter thread, same as one of Nikon's current 24-70mm f2.8 lenses) or the Nikon 28-70mm f3.5-4.5, which has a filter thread of only 52mm. Some more clarity with regards to the exact limit on the size of lens that could be used would go a long way toward helping us envision the range of lenses that could potentially be used. Thanks. Very excited about the potential of this new tool, and grateful for the R&D effort that Nauticam has put into this.