150mbps is actually incredibly small for 4K50/60 footage- the next smallest format from a "serious" camera I can think of is Canon's MJPEG 4K50/60 in the 1DXmkII, at ~500mbps. From there it jumps up to pro/semi-pro formats like ProRes, R3D, DNxHR, etc- which are bigger still.

There's no lower bitrate option for 4K50 because 150mbps is already about the bare minimum for 4K50/60 in an h.264 format (at decent quality). If you need to figure out how many cards you need for a full day, just divide your total shooting time by how long each card card gives you. You shouldn't need to do proxy editing if your computer is fast enough. If it isn't, well, that's just the rub for shooting in the latest greatest format (4K at 50fps).

Did you really think you could buy the newest awesomest camera, and use an old computer and small hard drives to easily edit its footage? That's like buying a Ferrari and then complaining that the insurance and premium gas is expensive.

The Panasonic GH5 has a better DR compared to the Olympus Em1 mk2, quite similar with the Sony A6500 (at least in the shadows).

One note: in the test, the GH5 DR was measured from ISO 200 (base ISO), the Canon 5D mk4 and the Sony (second image) from ISO 100 cause Dpreview didn't include an ISO 100 for the GH5.

From what I've seen, there is no visible difference in highlight recovery between ISO 100 and 200 on the GH5 but noise is one stop better (so the DR at ISO 100 must be even better IMO).

https://www.dpreview.com/reviews/image-comparison/fullscreen?attr144_0=panasonic_dcgh5&attr144_1=olympus_em1ii&attr144_2=canon_eos5dmkiv&attr144_3=sony_a6500&attr146_0=200_5&attr146_1=200_5&attr146_2=100_6&attr146_3=100_6&attr177_1=off&attr177_2=off&normalization=compare&widget=462&x=0.1928087915333984&y=0.4833430715456325

Slomo shots with 4K/60p/f5.6 (AF-Test) + 180p

Music: Symphony 9 d_moll Op. 125 by Ludwig van Beethoven

“For the price it is that they expect :-)” hence I’ll be moving on and sending my gh5 back even though I have less expensive “not professional ;-)” camcorder that does better job in run-and-gun situations.

Seems as if people are expecting to just open the box, and the camera to jump out, climb on a tripod, and shoot them flawlessly in 4k60p while they do their thing.

For the price it is that they expect :-)

and the first content they've created is about how this camera is preventing them from becoming "content creators".

Smart move, isn't it?

@EspenB

It seems that GH5 is an AMAZING CAMERA as long as you - don't use it! AF is Fantastic as long as as you don't use the acctual camera monitor and or camera internal recording?! Image Artifacts are nonexistant if you-use external recorder?!?! Picture is stunning if you record it -Externaly?!?! Quality that you can get out of this camera is-well will be Unprecedent, one day in future, in a year or so, when they come up with a new firmware...or acctualy maybe not, realy...

WTF?!?!!!!!?

I mean, truly, seems like Panasonic made a camera that nobody ever did: Best CAMERA IN THE WORLD - as long as its not turn on. Then all the problems become obvious...

Quite what I expected:(

Let me ask all the FANBOYS of this camera:

Who is this camera made for realy? For what kind of application?! Please Tell me... (and I will prove you that out there there are a way way way better price/perfomance pieces of gear, superior options that the acctualy users can choose...and the only reason why GH5 became a big deal is thanks to Panasonic marketing and naivite of the dreamfull masses...)

@MorganD

Barcelona's fine. It's no worse than any other big city.

Regrading GH5 auto focus issues:

The most positive test for auto focus speed was with an external recorder only. And thus totally flawed.

When you use internal recording almost all procesing power seems to be taken from the auto focus calculations and used to encode the bitstream instead.

This should not come as a big surprise as auto focus is worse in 4K mode vs HD mode also on the GH4.

Apparently the auto focus works even better if you don't record at all on the GH5.

Please see page 166 in the "Operating Instructions for Advanced Features" for the GH5:

"To ensure highly accurate focus, 4K motion pictures are recorded at reduced auto focus speeds. It might be difficult to focus on the subject with Auto Focus, but this is not an malfunction."

Sine auto focus seems to be substantially better as long as you don't record anything, this suggest that the CPU runs out of steam during actuall recording. Even more so in 4K mode.

They shoud have added an extra auto focus processor! ;-)

http://www.imaging-resource.com/PRODS/panasonic-gh5/panasonic-gh5A.HTM#shooting2