Panasonic GH4 Settings for Underwater

Thank you Luftu,

I couldn't find the original vlog topic at first. Then with google I found it: http://wetpixel.com/forums/index.php?showtopic=56300

ATM I cannot edit 4K because my main machine is under total rework.

Thanks again

Thanks Peterbkk and Scubabob for explaining your settings with the GH4.

I come from photo (www.joergblessing.com) and switched to the GH4 to learn video as well.

I read up as much as I found online, but am still struggling with producing good footage.

Would be supernice if anyone could help with a few questions:

• Peterbkk states f2.8 as starting point for shooting in M mode. I learned that with video I should double framerate to get my shutter speed (trying 30p and 60p for now). So I can only adjust ISO and Aperture, right? On photo I start off for wide-angle on f8 to get enough depth of field. My 7-14mm has only f4 but isn't that difficult to get things in focus. especially with a lens at f2.8 ???
• To keep shutter speed/framerate ratio, isn't it useful to use shutter angle (set to180°) instead of shutter speed, so the ratio always sticks. (Under "SS / Gain Operation" in video menu) even when changing framerate??
• Which metering mode works good for video underwater? Center weighted? Of course this only relevant when we use S or A video mode.
• ​I use backbutton focus as described by Scubabob quite happily in my Nauticam housing as I´m used to it for photo. Is it generally best to just prefocus or does CAF or even tracking work well with fast moving animals like mantas etc..???
• Magic Filter and custom WB with slate underwater or more success with Peterbkk´s method ??

Thanks to anyone who finds the time to answer some of those questions or for any other GH4 video tips!!

Cheers!

Joerg

You don’t need to run f8 on m43 cameras. That equal to f16 on FF in terms of DoF.

f5.6 is enough I find :-)

Sent from my iPhone using Tapatalk

Hahah! Thanks Richard, I photograph since years on m43 cameras and actually never realised that! Just read it up an yes you are right act DOF! Thanks!