CaolIla

I found a element to simulate the frosted glas. I can make to part, before the frosted glas to concentrate the light of the retra in the best manner. And the second in the tube... until the output Less try and error... I'll have something to do this winter... 😍😝

I found some web site to make optical calculation this seem to be a good one Ray Optics Simulation - PhyDemo I startet the modelisation of the retra snoot... (can be a good "work" for the coming flight ;) In red I draw on the prtscr the "snoot"... 🤣 I need to find now how to define different refraction index with this tool because we have water and the lense didn't work like in the air.. and this for some other infos. ‪Bending Light‬

Not a bad idea... on the other side the MFO-3 is for larger subject.... normaly the glas didn't approach coral or other things... I have the base to build a short hood I'll make that today

I had this opinion with my "old" Retra Pro X the booster hummm the 8 batteries... this wasn't a good combination. With the new Max II wouah it change my life. The AA can be found world wide... it is an argument You will have the Maxi... still not deliverable ... something seems to be wrong with the new model with Lion... I'm happy to have changed my pre-order from the maxi to the max II

The result, I need to attach a small bungee and it is ready for the trip

Hi I found that the original cap have some problems. nothing to hold it when not on the lense Heavy (relatively ;) ) Black... I don't like ... seriously difficult to find if it his lost. I build a new one, to print with TPU l You can print it in red ( like I made it) or black and why not pink or some phosphorecent TPU.... If you want the 3D STL... ask I will sent you the file. If you want some modification same ask...

I'm diving in France & Germany in Dry suit I know what it means... and with a 20 L tank (yes 20 L ;) ) I forgot to say... with my camera :)

The Retra have a big advantage for you from Spain "Address: Retra UWT, Ltd., Spodnje Gameljne 36a, SI-1211 Ljubljana - Smartno, Slovenia (EU)"

I'll make test with this find on Amazon... the bomb are wiating to be used since 4 months :(

I need to make test with the 3D modélisation software I use to look if the raytracing possibility are good enough to achieve the target of a good calculation of the result. With to software I used before (at work)I believe it was possible.

That is more or less what I made in the past. with 3d Printed piece to try different position IN AIR....that is the problem in water the light/lenses work not the same. I bought some mirror paint bomb the idea is to put 1) before the frostet glas (or a very lite frostet glas) a beam concentrator like that Painting the inner part of the snoot before the frostest glass like a "mirror" will help. The inner form need to be calculate to concentrate the light on the frosted glas. The first part will help to minimise the lost of light on the source. Part 2 after In the "tube" It can be painted like mirror... but also there it will help to calculate the form of the tube/cone what ever you want to name this to reach a maximum of the ray to be // at the end of the "tube". If it is not good enough used some "lenses" as collimator to reach a good directed flow of light in front of the snoot.

The frostet glas is there to made the light source more diffus.. the light go out on the other side did not have a direction but got more or less in 180 ° direction. The fresnel lens in this construction is directly putted after the frosted glas and the frostest glas is beetween 5 and 10 mm from the front of the strobe glas. As near as possible. It the final version I'll made 2 mm I'll didn't try with only the fresnel prehaps it is ok... but I have a doubt. I'll try it to show if the light is uniformfly coming out... I'm really not sure my fear is that there will be a "dark" zone in the middle. I'm not an optic specialist I need to study a little bit more the principle of lenses and find a software capable to make some calculation. to avoid to many "Try and error" loops. A problem is the change/or not of material on the glass interface..water didn't react same as air. The lense are build and giving focal distance etc in air not in water. I repeat the idea is to build a snoot with 1) as light as possible (for travelling) 2) as short as possible 3) suitable for ring strobelight, like the Retra 4) As less as possible lost of light,--> pilot light brighter 5) in the high end version an option for a diaphragme to smoothly change the size of the spot light.

Small feedback I wrote to Retra... very fast answer... a Sunday. :) That can justify the price... each minutes is € during a trip 🤣 The Update is only for iPhone for Android the last firmeware is v3.1.

It^'s more or less what I have.... I'm still thinking about removing the 2 torch ... but in night dive or in some location it is good to have the light for searching small stuff. Also when you lost the other turn on the lights help a lot (to be founded ;) ) In the worst case.. I have the 2 SOS on the Retra AND the troch... Same for the go-pro on the top of the housing... I didn't use it a lot... but in some case... really usefull to have an other angle of view if something special arrive... Dophin or ???? Like here Dauphin Hurghada 202310 | Hugues Brun | Flickr

I understanded it was humor... but in english... I was not sure. The design is made to hold the snoot easier and turn it on place on the Retra. It important with dry gloves ;) than I want to train tu usage of the snoot in cold water ;)

Don't know how to interpret this post ?????

I wanted to update my 2 new retra pro max II Connected to he smartphone Make the update on booth but I stay at V3.1 and I can get any information (trigger count etc... @Oskar - Retra UWT Can gibe me an advice? Thanks

The three size

With the lamp (not the flash) picture taked with a smartphone

TPU (red) to make the make the part holding together

I can't loose anything and it is very fast and easy to change the ending part to have different diameter the smallest is 9 mm

I made some picture Snoot mounted on the Retra Pro Max II (you can also see the new bumper) I made the choice to fix all together with bungee

Hi @Chris Ross You are right you describe the main problem of the retra, and probably the problem of mainly all new strobe with the circular flash light. That I didn't have engouth time before the the hollidays I only make a light version, but It work well (on air). I'll give you some feedback after using it underwater. The main opening at the bottom (strobe side) is larger as the lamp. I putted a frosted glass AND direct over a fresnel with a focal length of 80mm. The idea is to bring a maximum of the light in the good direction. OK they will be some loss but it seems to be ok (I repeat on land) The first problem is solve no more light in form of a donut. In the first version, watreproof with air inside, I used fresnel of 70 mm diameter. But the problem is the tightness at the junction between the glass and the PETG. Need to make some new experiment. I really want to have a version I can open for changing the lenses and the possition of it in the tube. Different focal and number. The idea is to have a concentrate beam of light and on the top where light come out a more or less paralell beam to be able to have a smal disk of light. I finished yesterday the light (weight) and short snoot I'll take with me end of the week to Malapascu & Sogod... probably more wide angle as macro... Really happy of the solution... hope it will work (not to bad) during the next trip. The light output is really good, no dark point in the middle, boundary sharp and working distance not to short. I plan to make some more experiment when I'll be back. I have some paint spray to make mirror The idea is to make a mirror/ deflector before the fresnel to puch a maximum of the light in the tube... you can see I have a lot of idea/experiment in reserve in my mind 🤪

You are right... my photo gear is every year heavier I need to stop add some lense, strobe, light. or what ever 🤣

Same for me.... I started with 48... (more or less 50+ ;) )