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Does the AOI wet wide lens fit? I have an EM-10 Mark IV which uses the PEN ports not the OM ports but I think you might have something that is compatible with it.

I tend to agree with Chris that m43 offers a great quality compared to size and price. As with anything else in photography, finding used gear is always going to be cheaper, but this is a very small niche and it can be tricky to find exactly what you need/want sometimes on the used market. However, there is currently a very nice Sony a6600 setup in the classified section that I would be very interested in if I were looking to start taking underwater photos. (I am not affiliated with the seller in any way so I will not benefit from the sale)

SOLD

First, I hope I didn't seem like I was being snarky in my response yesterday. Wasn't my intention. The AOI housing has no room for any other trigger. As long as this is the housing I'm using, I'm stuck with the AOI trigger. It's literally built right into the housing. I did get a response from Backscatter about how they manager HSS with their Mini Flash. Apparently the AOI trigger does support HSS (Super FP in the camera menu), which is why I can see the LEDs on the trigger firing. The YS-D3 does not support this and therefore does not receive a strong enough pulse from the trigger to fire. The built in flash seems to immediately switch into HSS at some point so I don't know when that actually happens. When using the pop-up flash to can turn the shutter speed to whatever you want and the flash just keeps firing. I don't have the patience to figure out when it switches from full power flashes to HSS pulses. At this point I just wish there was a quick way to turn RC mode on an off. Like a way to map it to a button or something.

Yeah, but this housing gets the job done and didn't cost much so I'm fine with it in the end. Sure, it has its limitations but if I were going to spend Nauticam housing money I would buy one for my Sony a7iv. I probably will do that one day.

Yes, I am familiar with what HSS is. Underwater photography is new to me, but photography in general isn't. Backscatter specifically advertises that you can use their mini flash 2 with has all the way up to 1/4000. While I realize I don't have that strobe, I'm interested to know how they manage that given the limitations they stated to me about the two different hot shoe connections.

I sent all of the above to Backscatter (where I bought the housing) and they replied today. They stated that the RC compatible hot shoe is only capable of 1/200 in manual and 1/160 in RC mode. If you purchase the Manual Only hot shoe it will go to 1/250 and of course you lose TTL(RC mode). I followed that up with a question about how they advertise that you can use high speed sync with their Backscatter Mini Flash and this camera and housing so I asked how that is possible. I realize that isn't the exact same setup I have, but I'm still curious. Also, something I find odd, even with the current RC mode hot shoe, I can see the LEDs flash when the camera is put in RC Super FP Flash (High Speed Sync) and the shutter speed is placed above 1/160. Also, when this happens, the Strobes make the same beep they do when they fire and are ready to fire again, they just don't actually produce a flash. Also, I can see the LED's on the housing flash red just briefly even above 1/160.

So here's all the data. At this point I'm probably just doing this to help out whoever ends up with this or a similar question in the future. Camera: Olympus EM-10 Mark IV Housing: AOI with built in hot shoe-mounted optical TTL trigger Strobes: Sea and Sea YS-D3 Duo The Strobes have the following modes: TTL, RC (specifically for Olympus cameras), and Manual (able to be configured to work with cameras that pre-fire the flash all the time even in manual flash mode) Camera has the following flash modes: RC Off: Fill, Off, Slow(rear curtain sync) RC On: There are two modes called Normal and Super FP Flash (this is Olympus' name for High Speed Sync) RC On Normal Flash: TTL Auto, Auto, Manal, Off RC On Super FP Flash: FP TTL Auto, FP Manual, Off With RC Off, camera will not allow shutter speed to exceed 1/200. Flash works in Manual. Will fire in TTL but does not provide TTL functionality. Turning mode on flash to RC, flash does not fire. With RC Normal Flash On: Shutter speed capped at 1/160. TTL Functions seem to work when selected and strobe placed in RC mode. with RC Super FP Flash On: Shutter speed able to be selected all the way up to 1/4000. Flash does not fire at speeds above 1/160. FP TTL Auto works. Flash does not fire in FP Manual. Placing flash into manual mode results in flash firing out of sync with camera even at 1/160. So, if you want to shoot with TTL, you have to go into the menu and enable RC mode on the camera and then turn the flash to RC. To shoot with manual flash and get a shutter speed of 1/200, you have to disable RC mode. Unless there is something I'm missing. Sidenote, when the camera is out of the housing, the little popup flash does high speed sync just fine. I can crank the shutter speed up as high as I want. It's only when I have the TTL converter connected to the hot shoe that it locks down the shutter speeds.

It seems like I have to go into the menu and disable RC mode to use the strobe in manual mode. It still will only let me go to 1/200 (camera won't go even go beyond that). Oh well. The manual for the strobe and the camera don't exactly paint a full picture.

The flash doesn't fire at all. I think I may have found out why. I was reading the manual for the camera again and I found a note saying that when you have RC turned in (Olympus' special TTL mode) it can't go beyond 1/160. I am going to try turning it off and seeing if I can get it to work that way.

I'm trying to figure out if I'm doing something wrong. In the menu of my Olympus EM-10 Mark IV it has the maximum sync speed for flash set as 1/250 but my YS-D3 Duos won't fire at anything faster than 1/160.

I sold the tg-7 to help buy the other stuff. I honestly kind of regret it though. I don't have any underwater camera right now 😂

This is a whole kit that really just needs a compact camera with the housing. Underwater tray, flex, arms, video light, strobe. Asking $400 plus shipping (USPS priority flat rate medium box) for the whole set up.

Just like the title says this is a UW technics TTL converter for the Sony a7iv and a7c. It’s made for Seafrogs housings but I’m willing to bet it would work in other ones. The LEDs that control the flash are plug and play so you could probably get different ones if you need them to fit your housing. It’s in nearly unused condition. It has never been taken more than 20 feet down. I had some issues with the housing and my camera and decided to go a totally different direction. UW technics does not take returns so I’m trying to sell the converter, they retail for $520. Any reasonable offer and it’s yours.

There are some really cheap little pen tablets you can connect to your laptop that work very well. I used this one before I eventually bought an iPad and pencil (bought the iPad for other reasons and ended up using the pencil for a lot of the editing I was using the little tablet for)