So I just blasted the 40 fps JPEG electronic shutter mode at full res. The GH4 conforms it into a playback sequence in-camera and although not played back at full speed it is handy to see how the files look in the sequence (similar to timelapse mode on the GH3). This is a great way to get nearly 50% slow motion at 4K+ resolution for 5 seconds of playback (conformed to 24P). I recommend setting the shutter speed to 1/80th for the optimum 180 degree shutter angle during capture. I'll shoot some bursts this afternoon and upload the 4K to YouTube tonight if anyone wants to have a look at the output.

@tron that would be fantastic, looking forward to your upload

The electronic shutter doesn't reduce the shutter rating at all since the mechanical shutter isn't doing any work when the e-shutter is employed.

How is this useful for full motion video shooters? Why would I need a 5 second clip of great fidelity? I get the benefit of a still shooter obviously.

I just reread the manual and it doesn't explicitly say anywhere that the frame size is limited to 2MP in 16:9 or 4MP in 4:3, perhaps the full rez option will still become available in a firmware update. @brianl 40 fps is useful for things like fashion shoots where you're trying to capture momentary action under controlled conditions and extract the most meaning full frame from the sequence. The same thing can be done with 4K, but 16MP is typically preferrable to 8.8MP frames of 4K and it also allows for the different sensor aspect ratios to be used.

Did anyone try the wifi live-view? Are you able to use your smartphone as a wireless external monitor while recording (any delay) ?

@panamedia yes wifi live view works pretty well. I used my iPad today with it and theres a tiny amount of lag but not bad at all.

I installed Davinci Resolve 10.1.4 lite and tried to import the GH4 MP4 and MOV media but the Resolve could not recognize the media. Has anyone else had the same problem? I know Resolve does not support AVCHD H264 container but I thought they would support MP4 and MOV.

@Zaven13 Resolve Lite will not import the higher Cinema 4K resolution files but should have no issues with the regular "UHD" 4k. I believe .mts (AVCHD) is supported in the newest version.

Photographyblog has a full review on their website. I've noticed there are a few errors in the review, but it's noise comparison that has me a little confused... http://www.photographyblog.com/reviews/panasonic_lumix_dmc_gh4_review/image_quality/

The raw images seem to have good noise control up to iso6400, but the JPEG images at iso3200 and iso6400 seem to look comparitively worse? I think maybe the raw images are a little soft, and perhaps the noise reduction in the raw concertor is doing things a little differently to the camera?

@mrbill and @Mistas. Thanks for your response. I do have the latest version 7.7.5 of Quicktime installed. It will not play GH4 MP4 (LCMP) and MOV files even if it is recorded in FHD formats. The message I get is "Error -2041: invalid sample description was found in the movie". I searched the internet and found one tip which was to change the file ext from MP4 to 3GP but that did not work either. I contacted Resolve support and they sent me the following link that shows all of the formats they support. It does not seem to include GH4 formats. H264 m2ts container that GH2 uses is also not supported. Looks like you have to convert to other formats that are supported first before using it in Resolve.

http://www.blackmagicdesign.com/media/5407521/DaVinci_Resolve_9.1_Supported_Codec_List.pdf

@MaxMX5 Well, the raw images will have been adjusted in whatever way the person doing the processing saw fit, whilst the jpegs are baked in camera. Generally speaking, if you have a modicum of skill you'll get the converted raws looking better than jpegs.

I'm not sure I understand the limitations, as documented, for 24Hz and C4K recording. My final target is YouTube/Vimeo and standard def DVDs. Can you guys see any potential issues?