FrancoisC

One point is the weight of the batteries. Weight restrictions for carry-on are more and more important (each individual bags were weighted in my last trip last week in La Reunion) Having batteries in boxes allows to put them in jacket pockets. 32 AA in 4 boxes give a total of more than 1,2kg. Combining with other heavy items in jacket (macro lenses, ..), you can stay at a reasonable bag weight (even if above, but not too much). You cannot do it with batteries remaining in strobes. I have Retra ProX since 4 years, and superchargers since 2 years. Beside the painful AA batteries handling, they work correctly. My previous strobes were S&S YS-D2. 3 of them died with broken tube...

I have zen 170mm with oly 8mm and it is very versatile ok for split shots and small focus distance

You can also use a wine bottle vacuum pump. It is cheaper and compatible.

I have some PLA parts outside in garden (not for underwater use) ok since several years. The most "dangerous" thing is the inside of a car under direct sunlight. There PLA will start to deform. No issue with TPU, don't remember having tested with PETG

to come back to AA vs Lithium discussion: I have 2 ProX initialy without extender. Very frustrating because most of the time with 2 subsequent shots, the second one was not lighted. I added battery extenders ($$$), and issue was no longer there, but -good, but not exceptional recycle time. -with the cost of higher overall length (not critical) -more manipulation with a total of 8 O-ring. With some time to time difficulties to insert extenders. -many batteries. 2 sets of 16 AA (because in some situations you don't have time of possibility to recharge, especially with 3 dives per day. With lithium batteries, I expect -better capacity : it sems ok. Enough for 3 dives ? -bette recycle time : not sure how it compares to Pro X...

Done some tests with various settings, and it seems that the easiest way to identify the S-Macro position is the "Max aperture" exif tag, with a value of 5.0 at S-Macro and 3,6 for others. I will try to find some time to post more details

Thanks Chris. I will make some tests to see how values are changing.

Hello does someone know if this is possible to see in EXIF or other what was the position of the focus limiter switch ? S-Macro, 0,25-0,50, 0,25-∞ Ideally in Lightroom. I check also OM Worspace and Image-Exiftool tool, but did not thing anything relevant...

Having already tried RRM outside water, I can imagine the headhache 🙂 yes, eyes are the most interessant. Taken with the 70D or the R7 ? I think I have already see some of the picures...

A little bit more than 800$ for a pair (50$ saving for each if you order before 8th of July). This is not cheap, but if you compare with the price of empty 4 to 8 AA booster... It's double the battery life, so you can probably dive 1 day with only 2 packs instead of 32 AA... But recycle time is only 10% better. Expect more for a Li-Ion strobe.... And I love (or not...) the sentence "NOTE: The USB-C charging cable is not included with the Retra Power Vault."

Hi JB did you set your Z330 to ignore the preflash ? small button on right. Push or pull, I do not remember...

I wonder if FLEX/TPU is less prone to have water going inside...

Seen issue with the salt deposit on the glass. I was clearly able to see the mesh pattern of the neoprene cover on the glass. This disappear with cerium oxyde cleaning (my glass had no coating, so it is not a problem) Now, I use the neoprene cover during the dive for protection, and have a hard cover used afterward.

I use same kind of 4mm cable with EM1 mk2 and FL-LM3 triggering Retra Pro-X It works alse very well.

With EM1-mk2 I use Oly 8mm also behind Zen DP170 dome and IQ is very good. I also have the Pana 7-14 behind the same dome with an extension, and previously behind a Nauticam 6" dome, but in both cases quality is not as good than 8mm with Zen dome, and the 7-14 ens is prone to flare. No longer used it since several years...