Marsh 8 Posted November 9, 2018 (edited) This is an Aquatica +10 close-up lens modified with a 67mm filter mount (attached with marine epoxy )on it's front when working with special filters or stacking more diopters. It also has the o-ring mounting system used with Aquatica holders. The lens reflective coating has some markings on the front element that do not affect the overall results. This is a powerful, yet lightweight diopter for both cropped and FF cameras. I've since moved to a Nauticam +15 CMC-1 for my N85 system. $100 plus shipping with USPS.Thank you,Happy diving :-) Edited November 9, 2018 by Marsh Share this post Link to post Share on other sites