Davide DB

Reflector. It's huge, empty and has a polycarbonate dome. The battery pack is the largest IATA allowed.

Hi, Yes bayonet miunt is the same so they are interchangeable. Backscatter is a rebranded version of the AOI. The lens it's the same, but they offer slightly different options. Some of our members have them so the may add other info. More info here:

I have several high-power LED lights but I keep using my Keldan Luna ones all the time. I bought them used as new in 2014 and they still run like a breeze now. I have had a few minor mishaps: in ten years I broke a magnetic switch and the plastic holder that holds the YS attachment. In both cases Keldan sent me the parts home free of charge. In one case Daniel keller skyped in to fix my problem immediately while I was in the boat. What more can I ask for? My original Luna's were 5000 lumens, CRI 96. Then years ago I decided to change only the LED module. At a totally affordable expense I changed the led module to the latest 9K lumen COB model also CRI 96. This is the old LED module that I kept with its little box like a jewel. New COB module on the left and old led array module on the right. The old 5K lumen module was obtained with led arrays. at that time there were no COB leds yet. I must say that maybe the light from the led array module was softer/warmer than COB. But it is my impression not supported by scientific evidence. I can imagine the care to achieve such a high light quality with all those LEDs. Note the different colors of led used. Was that their secret recipe to get a wider light spectrum with high CRI? 🧙‍♂️ Who knows... What is most striking about taking apart a Keldan lamp is the disarming simplicity of its design. All the light technology is in the led module. Externally you just have the aluminum casing and a magnetic switch that is nothing more than a plastic ring that slides with a small magnet inside it. Let's see some Keldan Luna Porn... 🐷 Led module has three pins that fits directly in the battery pack Once connected the light is turned on via an external magnet. IIRC 5 positions/power steps. This is an old battery pack, the new one has a digital display. On both there is a test switch position to check remaining battery life and there are two white leds that can be useful to check for pasta cooking time at night 😉 (the light rear cap is transparent). The huge head has an inner white diffuser like a strobe. I don't know if with the current COB module it's still needed but it's there. (No, the cat's ass is not part of the light) Real Luna Porn Once disassembled this is the inner alu tube. Everything come apart with a push of a finger. No tools needed. So keldan Luna's have the advantage of: having the interchangeable led module in water they are almost neutral respect other brands (-140 gr) Disadvantages: a very bulky head and reflector so they are a curse to travel nowadays (no problem for me because I reach by car 99% of my dive sites) You cannot use ambient filters. Actually you would need double the lumen output for effectively use ambient filters. To stay in topic, yes they have a constant light output 🙂 long story short. Over the past few months I have thought several times about replacing them with a pair of new 8Xs. Then I saw the price and I woke up all wet 😅 Though, if I put together the initial price in 2014 and the price of the two LED modules and spread it over the 10 years of use I have to say that maybe it was worth it. (In ten years I have changed 4 cameras and 3 housings and these keldan Luna are still here). Of course the initial investment is very high.

Well, the topic is complex and we should reverse engineering those lights to understand exactly the technique used to drive and dim the led. AFAIK the PWM method cited by Chris is not well suited for video or photo professional lights. Despite this, it is perhaps the most widely used method of adjusting the brightness of LEDs even though in public and private lighting, caveats are used and intl. standards are followed. Then there are other methods similar to switching power supplies that work at much higher frequencies. However, I believe that a light designed for video makes use of constant current drivers. If you are passionate about the subject, I will give you some links. The problems of PWM with video footage: https://www.ledsmagazine.com/specialty-ssl/article/14299599/video-lighting-iso-settings-and-led-dimming-impact-video-quality https://ledlightstation.medium.com/why-do-led-light-flicker-on-video-and-camera-9922bb8aabe9 A not-too-technical roundup of ways to drive an LED in a flashlight https://budgetlightforum.com/t/understanding-the-difference-between-linear-buck-boost-and-direct-drive-drivers/28594 https://lygte-info.dk/info/DriverTypes UK.html Bye

Yes I know but it is almost impossible to be unique on all social networks. we could have used our name followed by UW Photography Forum or something similar but it was too long and we preferred to leave it that way.

Hi Crasoner, Welcome aboard!

Easydive has unveiled the new housing for Gopro and Insta360 Ace pro with built-in mini dome (split shot I don't fear you!!!) 😄 Actually reading the features it is a 160mm dome so not really mini, especially for a GoPro. the FOV remains the same. Here the product page and a YT video of Alessando Beltrame showing the housing and dome in action. (Video is in Italian but YT can translate it for you). https://www.easydive.it/en/underwater-housing/action-cam/housing-for-action-cam/actiondome-case.980.html

Hello everyone, We have just launched the WaterPixels page on Facebook. The page will not have original content but will be a showcase of our most interesting discussions and articles on social networks hoping that it will attract other image makers with their experiences, contributions and questions. Please help us spread it: https://www.facebook.com/people/WaterPixels/61562852399315/

Nice video and nice idea. You described everything so well that it is difficult to ask you any more questions 😁 I was just reflecting on the fact that this type of diving has really opened up a new world of discovery from a scientific point of view.

Could you share the files and details in the DIY forum? Thank you in advance

Power of Log C2

In the meantime, let us console ourselves with this:

In my home I have the most expensive doorsteps and paperweights...

The price was so good that I had gone on faith. Now, knowing the Nauticam prices for a new housing and knowing that I may not even be able to sell my GH5 Kit... I think I'll stay that way and maybe invest in a new monitor or new lights. We'll see.

Three weeks ago I lost an incredible deal on a like new GH6 housing. The time I got a confirmation from Nauticam that iy would fit in the gh6 housing and it was gone...

it's wrong to think badly of someone, but you're very often right 😉

Superficial and distorted article to say the least. If this is journalism, I am John Wayne 😄

I read a lot of Canon users wondering if it's a DGO sensor. Let's see when it will be available.

After the last Panasonic presentation in which they used stock photos, the Gerald Undone drama (which later backfired) the R5 overheating scandal, when it comes to new cameras I don't even believe my mom anymore. 😆 To get some reliable feedback, I will wait for the camera to get into the hands of ordinary people. All influencers are unreliable if not corrupt. Canon's presentation and the various media outlets were so vague and contradictory that DPreview had to put a patch on it with this clarification. https://m.dpreview.com/articles/3364448295/canon-eos-r5-ii-for-photographers-what-you-need-to-know?slide=2 We await the clarification on the video section.

Maybe @Aquatica could help us?

Done already 😉

Based on the lens + diopter you have a small focus range. For Nauticam there's a chart with the most common combinations.

Hi Roman I am sorry that you had this experience with camera & scooter but its use it's completely different from what you describe. What you wrote happens for the reasons I wrote above. I assume that before carrying a camera on it, one is completely confident using the scooter. Although at first glance it may seem simple, its safe use is not trivial even in recreational diving. There are even courses to learn how to use it safely. In addition, there are different types of scooters, and as for camera mounts, there ar different models with different characteristics. No Gopros there. On the first photo I'm using a GH4 in Nauticam Housing, 6" dome and Keldan Luna 8 lights. On the second photo, a beloved Nauticam GH2 with two custom lights bigger than HF-1 strobes. Now I have a monitor too. Me and my friends use the camera (GH5, A7SIII, A6700, A7RIV) with scooter, lights and strobes nearly in all our dives. In the early 2000 we were using huge Amphibico Housings for shoulder mounter Sony camera on Gavin scooters. I drive the scooter with one finger and he goes just straight. When I leave the hand, it stays just in front of me. From the trash bin (wrong settings) last Sunday, my buddy filming @80m/262ft. For a limitless experience just use a detachable camera mount. The Suex camera mount permit to remove and reattach the camera underwater with a single lever push pull. This short documentary was 100% shot on scooter mounted cameras. We had no creative constraints in making it.

Plenty of posts about red filters 😜

https://blog.paracord.eu/post/7-paracord-bracelet-for-beginners-cobra