Dave_Hicks

Looks dodgy. One thought though. Some of my diopters included a M67 "spacer" ring. Perhaps something like that could be screwed on with some necessary force and then left in place to mount other items on the good spacer threads? Perhaps someone has an unused spacer they could donate? Example: https://reefphoto.com/products/nauticam-m67-spacer-ring-for-smc-cmc

That sounds great. 55m is more than enough for me. Do you have some end caps to seal the ends of n100 / n120 rings? Or should I provide something?

That is very generous! I will take you up on the offer, perhaps with two or three items if it's not too much trouble. An n100 and n120 extension ring. Ideally these can survive 100m. And perhaps a float? Like my HF-1 strobe float. I would be happy if that survived to 40 meters. I have dove these a bit over 30 meters. They are not as thick as the rings and ports, but they are no loss should they fail as well. I will message you for details. Cheers, Dave

I finally was able to borrow an n100 extension ring to get measurements and make prototypes of Nauticam n100 compatible parts. I can print out any size ring from 20mm on up. It all fits perfectly, but still needs to be tested in a vacuum sealed housing followed by a test dive. The basic design pattern and pressure resistance is well tested in the n120 versions I've been using for months. The person I borrowed the ring from is out of town for a few weeks, and I don't have a housing to test it, I need to find someone else to test it out. Any volunteers??

Pricing & Availability: Sony E-mount: Released July 30, 2026, for $1,699 USD. Nikon Z-mount: Released August 27, 2026, for $1,799 USD.

Thanks for sharing! I will try adding another 20mm ring and do some pool tests with both 79mm and 59mm. (19 + 20 + 40)

What is the spherical diameter of your dome? You need that to figure out the optimal position of the dome. For my 100mm dome I calculated the base mount of the dome should be 59mm from the housing mount. So my dome port mount is actually a 19mm extension. This positions the inside surface of the dome at an optimal distance from the focal plane inside the 60mm lens. I'm not absolutely certain that is exactly correct, but it seems to be working out quite well. If I discover that it could be better positioned I can always adjust the base extension length. I can print a new extension ring overnight if needed, so it's not difficult to make adjustments.

Super. My cap is also rubber for the same reasons. The open mesh design makes it a lot easier to remove and install underwater and makes rinsing simpler.

Very nice. I looked up that Inon part. Interesting modular dome available in glass or acrylic. It seems designed to mount on to various Inon base ports. How did you get it on an n120 ring? Did you make that part, or find something comercialy available? That acrylic version that you have is quite inexpensive at $135 usd and the glass is not a whole lot more. This could be a pretty good and easily available source of part for anyone that want to try a similar curved macro port. I've been using my 3d printed port and extensions for a couple of weeks now and have about 4-5 dives with is completed. It's been really fantastic. Here is an updated photo to the final product, configured with a 40mm printed extension ring and port cap.

Attaching a photo shot with the Kraken at F11 at near zero range from the subject. This was taken in pretty chunky water, but if you look at the lower left you can get an idea of corner sharpness. The upper right is much further away and not in the plane of focus, plus chunks...

The Kraken got a lot less use once i got WWL-1 which is a great option for Wide-Macro shoots. Pretty wide to Near macro and high quality at all ranges. The Kraken has corner issues for sure, but it does not always matter. But i still pull it out for some scenarios. When I want true macro abilities with the 60mm and a diopter with wide options. The CFWA of the Kraken is better than WWL as it has something of a fisheye effect in accentuating the center subject. It is also even wider than the 130degs of the WWL/WACP so close up it works like a fisheye. I would not chose the Kraken for a reef shoot, my 8-15 FE is better for that. A good all rounder picks the WWL. But kraken still get in the rotation a few times every year. It has some real useful abilities.

Yes, i use that TC on the Z8. Everything works great.

The Kraken KRL09 provides a 154.8deg FOV. And it focuses right up to zero range.

I recently got the Turtle3 manual trigger for my Z8 Nauticam system. Didn't need or want TTL but I did want to try HSS and Rear Curtain Sync. It's only about $350 or so. It seems to work well so far.

If the Kraken is in any way similar, that's an exaggeration at best. I often shoot it at f8 and up. The shark photos above were all F8 and they are very sharp.