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Just getting set up with mine— I’ll try and report back on the SMC-1 vs 1.4 TC question. One thing to consider on the TC side is that there is not yet a focus gear that works with the extension ring. I’ve heard there is enough interest to perhaps make one/adapt the existing one— but it is yet to be made available. @rainforest_UW Do you have the MFO-3, or any of the other underwater optics you’ve tested with your 90?

I doubt overheating will be an issue. The radiators are more than half uncovered, and even where the float wraps around one side it is not tight. But it will get tested shortly. There is no reason I can't make an Atom version as well and will consider that if there once this project is wrapped up.

Any interest in making these for the Atom flash, Dave? Do you think there would be any risk of overheating with these on?

The final draft is looking good. Filled in a few more interior gaps to make it conform better to the strobe and moved the bungee anchors to better locations to grip the strobe. Time to print a functional version now with ASA. 10-hour print time!

Yes - the lens is the same as the LX10 but faster! (24-75mm equiv. F1.7-2.8 lens) - I can reach macro and up with strong diopters on this (but the LX10 has a crop to 36mm in 4K, which helps), so this is good, even if it's not in the RX100 zoom category. One major downside I see are ergonomics - they're similar to the LX100, which is not great... As Backscatter once but it: As attractive the LX100 Mk II is with it’s Micro 4/3 sensor, the controls are very frustrating. Especially when interfacing with the Nauticam housing. Panasonic made the controls more like a retro film camera, and not very conducive for us underwater shooters, and especially for video. L10 LX100 Mk2 Design seems very similar, need to see how Nauticam handles it As a reminder, the NA-LX100 housing turned out like this: VS. this format for the NA-LX10 Still, very exciting news on the compact front these days, for a format which was declared dead and buried what, two years ago? 😁 We now have the highly modern Canon V1 and R50, the Sony RX1 RIII, and now this Panasonic L10 along the older RX100 / LX10 / LX100 / G7X of 10 years back. Wow. If I wasn't on the FF path now I'd really consider a compact upgrade!

I'll take it! If it tests out okay, I will upload the design to Makerworld, as I do with all my designs, for anyone to download for free. It will require an enclosed printer that can print ABS or ASA preferably with a heated chamber. Printing watertight pressure resistant bodies is tricky business.

after your final iteration, can i buy ya couple beers virtually and get the file? That looks great, buoyancy and will reduce dings

Ive used to work in 1000 passenger ferry boat in English Channel for 15 years.. Weekly drills, fire fighting training, all kind of procedures you would expect to save lifes. All the furniture on board is fire-retardant, sofas, beds, carpets, curtains and walls, to comply with SOLAS most commonly stands for Safety of Life at Sea. Interior Fabrics & Furnishings: Soft furnishings, curtains, bedding, and wall coverings must be inherently fire retardant or treated with certified sprays (such as Flametect NX2 or Emalfon i) to prevent the rapid spread of flames, smoke, and toxic gases. Structural Materials: Areas like engine rooms, flooring, and guest cabins often require fire-rated glass and specialized marine plywood (e.g., Mikasa Marine) to slow down combustion. According to AI, the Maldives Maritime industry must be comply with SOLAS for vessels over 500 Gross tonnage (GT) the 4 Yachts from emperor have between 32m and 44m, that's about 350GT, leaving them below the Weight limit for SOLAS complaince, that why the fire spread so quickly, the materials are not fire-retardant. ps: Some Luxury superyacht like the Galaxy Sky has a class of the Maritime Register of Shipping and complies with all standards for the safety and operation of ships (IACS), according to the international conventions Solas and Marpol. @TimG first hand experience its a very important sharing to others , ive pass it to the group that im going to the Maldives in the end of the year ( also Liveaboard emperor). Im glad everyone manage to get out safely, material stuff are secondary and replaceable, human lives are not.

I shoot in shallow water in rivers and streams. I've used each of the OM's. I still struggle at times to get the WB I'm looking for. It's typically tinted towards green. Ultimately, I decided to lean into that WB. That said, I'll admit to liking the natural coolness of the Sony WB more than Olympus, but I love shooting OM w/macro.

Looks like an amazing lens. I love my 90mm. It is slow to focus at times, particularly on small things, but the images are so beautiful. I'm excited to get my hands on one of these.

Sold!

Does anyone have an estimate on what extensions will be required for Marelux/Nauticam 180mm and 230mm domes?

Backscatter Underwater Review of the Sony 100mm Here is the full article: https://www.backscatter.com/reviews/post/Sony-100mm-Macro-Lens-Underwater-Review

Thanks Tim!

Very interesting, @Dave_Hicks ! I like the streamlined design. Let us know how it goes.

It's a little video beast. Basically it's the GH7 sensor in a smaller factor. I read the lens has a MFD of only 3cm and it has a mech shutter.. It could be a killer compact camera for uw use. Nauticam announced a housing already.

This is still a draft print, maybe one more iteration before a functional waterproof version. I will plan to dive it this weekend for a test run. The draft print is less dense than the final article so it is positively buoyant. I intend for the pair to be slightly negative, around 20 grams. Versus 250 grams negative for the HF-1 itself.

Good news everybody! The lens has already made it to optical bench hub: https://www.photonstophotos.net/GeneralTopics/Lenses/OpticalBench/OpticalBench.htm#Data/US20260029629_Example06P.txt,figureOpacity=0.25,AxisO,OffAxis Two some very good indicators that suggest it to be a good uw candidate: 1.) Entrance Pupil just moves 4.35 mm during zoom 2.) Just 42mm front glas diameter (will work with many water corrective optics) 3.) Minimum subject distance in Front of the lens = 123,2 mm = 12,32 cm 94° diagonal FOV @ 20mm behind a dome

i'll take it-pm sent

Pics?

I sort of designed a HF-1 form fitting float today that leaves the strobe about 20 grams negative in the water, adding ~230 grams buoyancy. Much less janky than foam blocks.

Great to have you with us. A warm welcome to Waterpixels. Best wishes

The RS13 is well smaller than most macro ports. Even with 230mm dome, using the ball-clamp-ball it would be well above the dome. And could be moved forward also instead of just up. I guess i could just get the WA afterwards for it, if see the need. Japan just has very nice pricing at the moment. Also would be interested how much it actually brings to the table compared to the no lens option.

I was able to get this printed and confirmed that this gear fits perfectly.

i guess you are shooting with a dome? if you are ...very likely you will see part of your dome. i wont need to put a wide angle lens on it... imo...