For Canon G10/11/12 WP-DC-28/34
iDivesite Adaptors & Filters - M67 Adaptor Mount (Black)
The i-Das 67mm flip diopter is the best way to attach your 67mm macro lens to your Canon underwater housing for the G10/G11/G12 camera, or the Canon G15 or G16 housing. It is simple; flip the adapter down to use it and flip it back up when done. Works well with the Bluewater +7, subsee +5 and subsee +10 lenses.