OK, so I found a local dealer willing to let me test with my setup (Olympus m.Zuiko 12-50 lens in Nauticam flat port). I tried the SubSee +10 in the Nauticam flip adapter. My objective was maximum magnification (we consistently find pygmy seahorses on our local dives) so I did not test permutations at constant distance. As luck would have it I forgot to check my camera battery and it started flashing red on the first test shot so I had to rush, hand-holding a heavy housing over a poorly lit sales counter, hence these images are not very good, but they show the most important parameter which is maximum image size.
First, the lens at 43mm macro mode, no diopter. Closest focus is about 50mm from the front of the port. Horizontal image size is about 35mm:
Then, same 43mm macro mode with the Subsee +10. Closest focus is actually touching the lens, resting the front of the Subsee on the edge of the ruler. Horizontal image size is about 28.5mm:
Finally, for those without the Nauticam gear for this lens, I tried The Subsee +10 at 50mm (normal not macro mode). Closest focus was about 50mm from the port and horizontal image size is about 32mm
I conclude that this combination doesn't do what I was hoping, as the relatively small increases in magnification (about 25%) is offset by the loss of working distance, which would make approaching and lighting anything animate just about impossible.
Also for those hoping to save on the cost of the expensive Nauticam zoom port and gear for the 12-50 lens, it seems you can save $400 by buying the macro port and Austrian zoom gear, but end up at nearly the same image size as the 43mm macro mode, and need to spend about an extra $400 or so for the Subsee and flip adapter.
So for now I am going to stay happy with the versatility of the zoom lens, and buy the 60mm macro. Once I have that lens, then maybe the Subsee will produce the results I am after.
- ajay likes this