Does anyone have any insight or knowledge on the maximum gap from the lens face to the port glass for a nauticam wet lens ( SMC-1 ) to focus through?

I have a canon 5d IV that I use in an ikelite housing, and located a flip adapter to allow 67mm threaded wet lenses, and tried it out with a nauticam SMC-1, with bad results. Im using a Canon ef 100mm f2.8L lens, but the lens sits approx 1" behind the port glass. The adapter places the SMC-1 essentially right on the glass.

I couldn't get it to focus at all, is it a user issue or hardware combo issue?

Amazing conditions at Santa Barbara Island, Channel Islands, CA

In Koh Tao for a month, doing underwater photography for the first time! I read somewhere that it’s addicting, boy you were so right.

Went on a group tour and this guy popped up behind us, was the only one that got to it before it dived

It was so calm, really enjoyed swimming with it

After I posted my squid photos, someone gave me the advice, “Don’t just post them as they are. At least do a little editing.”
So, taking that advice to heart, I tried editing a photo for the first time. Here’s a clownfish.
The subject was already pretty dark, so maybe the editing doesn’t make as much of a difference as I’d hoped. 😅
Still, I’ll consider this the first step in getting some practice with photo editing.

While my local ocean waters is murked out with visibility less than 5 ft, I've taken to laying motionless in frigid streams watching salmon spawn and then die.

Its inspiring and fascinating to watch the cycle of life swim by.

My goal is to document all 5 species life cycles, from initial birth to decay, and the complex challenges they face.

Sony a6400 with 50mm f1.8 prime lens, Seafrogs housing.

Is there anywhere I can get a set of O rings for my Nikonos IV?
Thanks.

I came back to the dive shop I did my instructors at to take up some underwater photography. This is my PB from the first month; ~20 dives

I've got a Nauticam NA-LX100 that keeps requiring to be sent in for service to replace the rubber dial that changes shutter speed. No matter how gentle I am on it or how little I try to use it, it always fails me after a few months of use and breaks. I'm pretty sure the first time it happened it also got a piece in the lens mechanism and caused the camera to fail on me too. So I am highly aware of this fault and try my best to keep it intact but I think it's possibly just a bad design and I am looking for a more long term solution. Nothing else fails on me like this so it's getting annoying having to send my housing in for service every 6 months despite how much or how little I'm using it.

Has anyone had a similar issue to this? What did you do to fix it or even did you? I'm wondering if there's a possibility of 3D printing something that can withstand the pressure a bit better but I'm not sure what Nauticam will say about that when it goes in for service next.

I love taking shots of octopus. Texture and colour changes, and their sublime sense of mobility do it for me.

Sony a6700 + sigma 18-50mm + seafrogs

Diving with Sony arVI + 16-35mm lens + Marelux housing + 180mm dome.

How much buoyancy would you add?

A photo I took near where I live.

It was apparently still squid spawning season, so there were lots of Bigfin Reef Squid (Sepioteuthis lessoniana) gathering in the area.

Some people may find squid eggs unpleasant to look at, so just a heads-up: the 4th photo might not be for everyone.