On both the Mirrorless and Video Gear threads there has been much speculation and desire for information on how the GH5 performs underwater.
I received my Nauticam Housing last week and got the camera in the water for a single dive on Sunday. I used my Olympus 12-40 f2.8 Pro lens in 180mm Nauticam glass dome which I used with my Olympus EM5
Full disclosure I am a rookie at video, and have even less experience editing. I have been shooting stills for 4.5 years and while I enjoyed the EM5 I found it a bit lacking lately with some of my deeper, darker dives doing conservation work on glass sponge reefs. Constructive criticism greatly appreciated.
I am in the process of upgrading both my hard drives and computer system as my old laptop is out of space, and horsepower.
Due to my current computer challenges videos linked below were shot 8 bit 1080p 60fps, and have been run through Windows Movie Maker which converted them to 30fps? (As stated, the technical side is currently beyond me)
No colour grading, exposure or other shifts has been applied. You will note the white plumose anemones are washed out / burnt at times but I really wanted to get a feel for the camera, and judging results on a small camera screen is not that easy. There is some focus hunting, which I honestly think was me hitting AF lock lever trying to re-focus.
Anyway, to keep things simple I shot 1/60, f8, Auto ISO, Manual White Balance and Single Autofocus.
The white balance was remarkably easy, simply hit the thumb lever, then up button to activate viewfinder, point at something white (I used my dry glove, or a white anemone) and hit OK. Perhaps a grey slate would work better? I don't know, this was the first time I have ever performed manual white balance.
Local water conditions can be challenging at times due to river run-off and plankton. This dive had pretty good conditions; decent visibility at depth with suspended particulate and a surprising amount of light considering the top 8 feet was river silt with 2 foot viz, and the next 10+ feet was plankton soup with 5ish foot viz.
Here are a few miscellaneous shots where I tried different scenarios https://youtu.be/ydu2t-w1Vis
Mother octopus grooming eggs (eggs start at 1:06) https://youtu.be/M7NrIMyTR4o