I just upload my H.265 6K photo 4:3 and 3:2 video files to youtube set to private to use as a preview since I could view them in 5K and 8K (youtube settings) on my 4K UHD monitor then I use Edit Ready 2 to convert to Pro Res 422 . On my Mac Pro Quicktime plays the Pro Res files in all modes ( normal, full screens, actual size ).

normal 3:2 mode on 16:9 display: https://c1.staticflickr.com/5/4231/34584687604_ac6be435a0_o.png

full screen : https://c1.staticflickr.com/5/4259/35296897901_98a76b9990_o.png

actual size : https://c1.staticflickr.com/5/4287/35296893471_3c15c8000c_o.png

@Vitaliy_Kiselev

I found a setting in PC Potplayer which plays GH5 4k 60P buttery smooth with low (20%) CPU load and 35% GPU load. With default settings my 6 years old computer uses 100% CPU / 5% GPU and the play is choppy.

I use nVidia GTX960 graphics card. In Potplayer I selected: preferences-filter control-video decoder-h.264-...box in right-H.264/AVC1:Nvidia cuda decoder.

6k HEVC video is still very choppy with that setting.

Thanks for suggesting trying settings.

I have win7 and 6 years old AMD 6-core computer. No quick sync.

I have tried Windows Media Player, Media Player Classic, VLC and Potplayer. I think these are the most common players in Windows. All works badly in default settings playing 4k 60P. I have a powerful graphics card so I think the trick is to use it maximally for decoding 4k 60P video, not blocking the graphics card. Now finally my system works so.

Potplayer works very well now with Cuda decoding. I will test Zoom player but I dont think it will play GH5 6k video with my computer.

Blackmagic Pocket vs GH5 - Shootout:

Review

http://dc.watch.impress.co.jp/docs/review/newproduct/1077130.html

Panasonic GH5 review: https://www.focus-numerique.com/hybride/tests/panasonic-lumix-dmc-gh5-3001.html

@Vitaliy_Kiselev , you may be right but i've missed it. :)

What I find very interesting in this particular review is the DR latitude measurements: 2,3 stops in highlights and clear 4 stops in the shadows; a total of 6,3 stops editing latitude, not bad at all for the sensor size. :)

And I found again more confirmation that (at least in RAW) there's no visible loss of highlights latitude by shooting at ISO 100 vs 200, but there's a gain in the shadow detail and lower noise floor.

Shot with the GH5, NIKKOR 55MM F1.2 taking lens, Bell & Howell 2X Anamorphic. Captured internally 60FPS, Cinelike-D profile (for night shooting / shadow noise suppression) and graded in MB Looks w/ custom curve work. Vimeo output 3.3K, Youtube master output 6.6k (link to follow shortly).

PR

GH5 Firmware Update Version 2.0

Newark, NJ (August 30, 2017) Panasonic today announced the new firmware update Verion.2.0 for DC-GH5 to further enhance its performance. Many enhancements were previously planned but additional modifications were suggested by end users that specialize in both photography and cinematography. This updates is an exceptional upgrade in camera performance to satisfy professional GH5 users.

The new firmware includes following upgrades:

Compatibility with "LUMIX Tether" PC software

This new firmware enables GH5 tethered shooting via USB, using “LUMIX Tether” PC software. Users can control the camera by connecting it to a PC via USB. It lets you view the image on a large PC screen while shooting, which is helpful in commercial photoshoots of portraits, products and so on, where continuous confirmation is required. You can use [6K PHOTO] [4K PHOTO] and start and stop video recording with the tethered shooting. It is also possible to choose the folder to save the image files in the PC.

Improved auto focus performance

• Auto focus performance for subjects with low contrast in photo shooting is improved.
• Tracking auto focus performance in video recording is improved.
• The customized AF area can be continuously displayed in [Multi AF] and [Custom Multi AF] during live-view.
• The AF area in [Multi AF] can be moved to the other edge (side, top or bottom) when it reaches one edge.
• The start point of AF lock can be set on the live view screen in advance in [AF Tracking].
• The AF area can be moved while the shutter button is half-pressed or while recording in [Burst Mode], [6K PHOTO] and [4K PHOTO].

** Improved performance in [6K PHOTO] and [4K PHOTO]**

• The waiting time to start the next burst shooting sequence after [6K Burst] and [4K Burst] is shortened to less than half the time.
• [Loop Rec] is available in [6K PHOTO]
• Use of Panasonic SD Memory Card with Video Speed Class 90 is recommended for [Loop Rec] of [6K PHOTO].

An additional ALL-Intra Video Recording mode

• 4:2:2,10-bit ALL-Intra video recording mode is added to 4K/FHD video recording.
• Use of SD Memory Card with Video Speed Class 60 or higher is recommended for 4K ALL-Intra video recording. Operation is confirmed with Panasonic SD Memory Card with Video Speed Class 90.　　
• New 4:2:2,10-bit ALL-Intra Recording Mode

4K HDR video recording

• [HLG] (Hybrid Log Gamma) is added to [Photo Style]. HDR (High Dynamic Range) is a mode to reproduce both the brightest and darkest part in an image, making it look just as human eyes see. The camera records video with a designated gamma curve compatible with ITU-R BT.2100, and you can now choose Hybrid Log Gamma (HLG) in [Photo Style].
• A low-bit-rate recording mode 4K HEVC for HLG was added. This enables playback on AV equipment compatible with the HEVC compression format, such as Panasonic 4K HDR TVs.

Enhancement of the Anamorphic video recording mode

• High-Resolution Anamorphic mode, which enables video recording in 18-mega effective pixels, is added. Recordeding in HEVC

• New High-Resolution Anamorphic Mode

  • "High Resolution Anamorphic Mode" records motion picture with an aspect ratio suited for an anamorphic lens,4:3. The effective picture size for this mode is equivalent to the number of pixels produced by 6K (approx. 6,000 (horizontal) x 3,000 (vertical)) images (approx. 18 megapixels).
• [Anamorphic Desqueeze Display] was added, which lets you view an enlarged image in Cinescope size while recording with 2.0x and 1.33x Anamorphic lens.
• [Video Guide Line] is added to display the image in a variety of aspects, such as 2.39:1, 2.35:1, 16:9, and 1:1 while recording video. This can be used not only in Anamorphic mode but also in other video recording modes.

Enhancement of Body I.S. (Image Stabilizer)

• [I.S. Lock(video)] is added. This powerfully compensates for handshake when the viewing angle is fixed.
• A new handshake correction mode is added, which provides optimum correction when using 2.0x and 1.33x Anamorphic lens.

Correction of white balance setting

• When the K (Kelvin) value was changed after adjusting the color temperature with 2-axis white balance compensation, the setting was reset. This bug has been fixed.

Improved usability of Time Lapse Shot

• The time to finish shooting and the number of recordable pictures are displayed on the stand-by screen.

Improved usability of Power Save LVF

• Power Save LVF can now be used during all stand-by display options.

Wireless functions

• The Bluetooth Remote Control function can be used with Image App, which will also be updated at the same timing with the GH5 firmware release.

• If the camera has not completed image transmission when it is turned off, it restarts transmission when it is turned on with the [Auto Transfer] function.

Other improvements

• A rating function using a Fn button is available in Playback Zoom and Multi Playback.
• The following functions can be assigned to Fn buttons - [Constant Preview] [6K/4K PHOTO Bulk Saving] [Min. Shtr Speed] [RAW Processing] [Rec/Playback Switch] [Destination Slot] and [Mic Level Adj.].
• The DISP.Button can be locked.
• In Relay Rec, there were cases where the video file number was not able to be reset. This bug has been fixed. *In Relay Rec, there were cases where the video file number was reset after formatting the SD Memory Card. This bug has been fixed.
• In Backup Rec, there were cases where the file number was not reset even after applying resetting. This bug has been fixed.
• The image quality when applying the following settings is improved: Extended low ISO, [i.Dynamic] (Intelligent D-range Control) and Highlight Shadow.

The new DC-GH5 firmware Version 2.0 is scheduled to be released at the end of September 2017 at the following LUMIX Customer Support website.

LUMIX DC-GH5 Firmware Ver.2.0

http://panasonic.jp/support/global/cs/dsc/

400Mbit is in firmware provided to selected testers

Also lower bitrate HEVC is added, good for long videos

Via http://jacobjamesphotography.co.uk/gh5-firmware-v2-whats-new/

My sources tell what less than two weeks ago 400Mbit modes had issues. This is why it was decided to buy developers time.

The additional features are well worth waiting thirty extra days.