TimG

I’d suggest a periodic rinsing and cleaning of any parts that needs screwing together. Galvanic action, salt accumulation etc can all have a gluing effect. I’d probably do that maybe once a week if diving really frequently

Yeah, on the watermarks there have been loads of posts over the years both here and on Wetpixel (RIP) offering solutions from white vinegar to Coke to a windscreen cleaner to Brasso. I think I’ve tried most of them. I don’t think any of them really worked (including cerium oxide). I’m left with the Chris Ross method. Rinse and wipe.

Sounds like a very thorough job! A bit like Dave's approach, I only remove and clean the port o-ring if I change the lens/port. If the seal is good and I'm not changing lens, I leave it in place until diving is done for a while. If I'm diving in a sandy environment (I'm thinking sandy shore entries), I'd probably check, remove and clean the housing o-ring IF I had to open the back. But if, say, liveaboard diving in reasonably clear water, I'd check the o-ring visually if I open the back. But, like, Dave, would likely leave it in place unless I could see debris on it. Slackening off the arm clamps during rinsing is important, I think. My partner didn't release a clamp over several months and it was the devil's own job to loosen it. Watermarks on ports are a pain. A comment @Chris Ross made some time ago had me wiping ports down after rinsing them - good tip I thought. I have tried using denaturalised water after rinsing but came to the conclusion it made no difference and that water isn't cheap.

Hi Stephen A warm welcome to Waterpixels. Really great to have you with us. We hope you enjoy the forum. Best wishes

Hi Adrian I've just bought an OM-1 to replace my lost D500 but havn't yet got it underwater - not even into a housing! I'm intrigued though that you compose on the LCD screen rather than in the EVF. Is there a reason for this?

Hi! I’m not even going to try to type your username! Great to have you with us. A warm welcome to Waterpixels. Best wishes

Hi hamsteRfury If you’re looking for advice on this, it’d be better to start a new post rather than continuing in this thread. More people read and respond in the Technique forum rather than in this one which is essentially for new members to introduce themselves and is part of our anti-spamming system.

Hi Jock! A warm welcome to Waterpixels. Great to have you with us and congratulations on the retirement. A long and happy one I hope. Best wishes

Hi Kevin! Great to have you with us. A warm welcome to Waterpixels. I suggest you start a new thread with your question under the appropriate forum as that’ll get more views than here in the Members Intro thread. Best wishes.

Greetings from a fellow Northener and a warm welcome to Waterpixels. We hope you really enjoy the forum. Good to have you with us.

Hey Tora! A warm welcome to Waterpixels. Great to have you with us. We don’t have many members in China so you’re extra welcome! We hope you enjoy the forum. Best wishes

I’ve gone the same route as Dave with a Turtle 3 Smart trigger Manual. I must admit I’ve never thought much about sync speed but use HSS. Why not house the Z6iii? Hmm, fair question. Down to size I think. The Zuiko/Panasonic lenses are minute compared to Nikkors. And I really didn’t want FF and the WA hassles that brings.

Hey guys All the excellent advice was much appreciated. I thought it might be of vague interest to post on making the switch from (some years back) a FF Nikon D800 to APS-C with a D500 in 2017 - and now to M43 with an OM System OM-1..... I thought the D800 was great and loved the colours out of the camera. My big issue though was The Big Issue: the port for wide -angle. Traveling with a 230 domeport was an utter pain. It was either the camera system or, so she threatened, my partner. What can I say.... So, sold the D800/Subal and switched to D500/Subal. As you may have seen here, loved it! Nine very happy years with the system, pure muscle memory and I was pretty sure that it would see out my diving life. However...... it is all now a burnt-out mess on the bottom of a Maldivian harbour. So starting from scratch: I wanted something reasonably transportable, still with ICLs and well-supported in Europe. Based on the advice you guys gave and some additional reading, I have gone with the OM-1 and M43. The first lens, an Olympus 60mm macro, arrived yesterday. Yeah Gods. It's like Honey I Shrank The Kids. Tiny! Where's the rest of the lens? The Panasonic 8mm FE arrived a few hours later and is minuscule. The OM-1 arrived last night. Not such a shock as I'm using a Z6iii topside but, still, significantly smaller than a D500. After a great dealer response, I'm now waiting for the Nauticam housing, ports etc. I really, really agonised over switching from Subal to Nauticam. I've used Subal for over 25 years and loved the quality and feel. But no response when I contacted Subal about housings so, somewhat reluctantly, I've gone to Nauticam. Bottom line, they are very well supported in the Netherlands/Europe, loads of innovation in their products - so let's see. I've stayed with the Nauticam equivalent of a 45-degree finder, ordered a flat port, the USB-C bulkhead (thanks for that great idea!), vacuum sensor setup (sorry, Miso at Vivid Sentinel). Our very own Chris Ross is selling me his Zen100 domeport. So there we are: Full frame to APS-C to M43...... Will post if there are any interesting developments. (I'm now intrigued about how big a camera bag/box I'll need)