I have used both the CX7 and SR12 on 2 consecutive dive trips both inside my new L&M Stingray HD.
The Stingray HD is a great housing for these types of cameras. Even though I have had some recent problems with L&M I really do think their housings are tough to beat for quality and function. This housing moves so smoothly through the water, it's perfectly balanced with the needed weight kit, which should be included as the housing is miserably buoyant without it. I have 2 UK Light Cannon 100's on ULCS, the whole package is a great combination.
The first trip to Providenciales in April I took a Sony CX7. The CX7 was pretty disappointing for video quality, and I was not having a great time with the Stingray HD either. The Monitor Back would barely make it through 1.5 dives on fresh Duracells, and I occasionally could not see much more than shadows of my subjects through the Monitor Back as it was way too bright and overexposed. After a conversation with Paul Barnett of L&M, who does a great job of advising me through these situations via Email, I learned that rechargeable NiMH batteries are the way to go for the Monitor Back. As for the rest of it, I was the first L&M customer using this new housing and camera setup.
For the next trip to Cozumel in May I had some 2900mA NiMH batteries, the OEM Stingray HD weight kit instead of my 2 one pound weights zip tied to the housing, and the Sony SR12. The 2900mA batteries totally fixed the Monitor Back going dead and rendering the whole system useless problem, and the SR12 eliminated all the brightness and overexposed display issues on the Monitor Back. Everything was falling into place and I was impressed with the video quality. Then on one dive I switched from video to photo mode and everything went to hell. The camera kept trying to take photos, and endlessly simulated recording photos to the Memory Stick, while actually continuing to shoot video, then locked up completely in video mode and was totally unresponsive to any combination of attempts to turn the system off via the housing controls. I had to open the housing and manually turn the camera off later. I immediately sent this information the Paul, who got to work on it. I also ran the camera through dry tests in and out of the housing to recreate this issue. Basically the camera does not like going from video to photo mode while recording video, or even in standby while using housing controls. This is not an issue when outside of the housing if you toggle from video to photo, but if you hit the photo button while shooting video the camera takes issue and will lock up. Apparently the signal the housing gives is to the direct photo button, not the toggle to photo mode which switches into dedicated photo mode as opposed to snapping a photo while in video mode. Anyway, this is not really the fault of L&M, more Sony's design flaw. However, the end result is a "use at your own risk" photo mode. After testing this underwater several more time and getting locked up trying to take photos, I decided that this camera was going to be a dedicated video camera, and that's that.
Fortunately I am very pleased with the video quality and like the whole system.
The best part of the SR12 is that every couple days I would take some time to edit and cut down my video. This worked so awesome! All totally within the camera UI I was able to take clips and cut both ends to end up with the perfect, finished product ready to import right into my software timeline. I repeated this clip after clip taking 5 minutes down to 15 seconds etc, deleting some clips altogether, sometimes splitting and cutting as many as 20 times on the longer night dives where I pretty much left the camera running. It was amazing, what took hours of importing into the computer and tons of time editing was all done before I even left Cozumel, and the best part was I backed my finished clips up throughout my dive trip to a Memory Stick card directly from within the 120GB SR12, and when I got home I stuck that Memory Stick card into my Mac and in no time was ready to arrange and add music.
The SR12 may not be perfect, but I have seen the light and am never going back to tape.