Is it possible to rig an AOI quick-release lens holder to an AOI cold shoe mount, possibly something like this or this? I plan on taking out the M52/67 threaded mount and rigging the quick-release lens holder to the cold shoe in its place.

Originally, I bought two QRS holders to mount onto my arm sections to store my wet lens and macro diopter for when I'm not using them. However, I realized this would cause an uneven weight distribution which might make maneuvering the arms a bit more difficult, and I would not be able to fit enough floats on the arms to make my setup neutrally buoyant. I also figured I would need only one lens holder as I would probably be using either one wet lens or the other at a time, but not neither of them.

Alternatively, I could mount the lens holder on another arm section attached horizontally across the handles of my tray, using triple clamps to attach both the horizontal arm section and both my arms. However, this solution is more expensive, so I am trying to make cold shoe solution work, if possible.

I believe the QRS lens holder probably will be able to be bolted onto the cold shoe in place of the threaded mount, the problem then would be will the QRS holder be fixed in place on the shoe or will it spin. In the QRS holder for Ultralight arms, the lens holder is held in place by two prongs where the lens holder screws into the arm mount. I noticed on the threaded cold shoe lens holders that there are two holes that look like they might be used to interface with similar prongs.

If anybody has both of these mounts on hand, could you test this for me please?

PS: If you have the single QRS mount (as opposed to the twin mount), I believe you have to take the square nut out of the lens holder, which you might not want to do.

The problem with a single lens holder and two lenses is you need to put the lens you take off somewhere as your other hand is holding the rig, The problem with the wet WA lens sitting on the hotshoe is you will be doing this when you are trying to shoot macro and aiming the rig will be more difficult when you are in close to your subject. You could consider the 3D printed wrap around strobe floats for your strobes - they look like HF-1s, there is a design someone has come up with on this site for this.

Perhaps not a concern, but how strong is that cold shoe mount on an acrylic AOI housing? I am not confidence inspired by those even on my Nauticams to support anything heavy which might be prone to getting a whack. I might favor a cross bar solution.

Edited July 16Jul 16 by Nemrod