What do you think about 180fps function?

@aldolega

I'll second that notion that implementation can really make the difference. The FS700 is another example of how surprisingly good low bit rate can look. Two of our shooters use them for A cam. We shoot a lot of action sports and it's never disappointed IMHO. True - we're not doing extreme grades, but fairly standard color correction with vary levels of pushing the image around to get what we're after. I'm impressed at what that camera is capable of. If it wasn't for the awful form factor and overall ergonomics, I would've flown it more. I've preordered the GH5 not because it's night and day better than the GH4. But it's enough of an upgrade to justify the money in my book. It'll pay for itself quickly. Plus I'm already invested in MFT glass from GH2 onward. So the investment was minimal.

@bannedindv

I shoot mostly action, at 30p or faster, with fast camera movements, often with a deep DOF. The kind of shooting that puts the most strain on a bitrate-starved IPB codec. So I am similarly, but less conclusively, skeptical of 150mb/s being enough, as I was of 100mb/s being enough for the GH4; fortunately, the GH4 was mostly adequate in my 2.5yrs of shooting with it, so I certainly hope the GH5 does the same.

Breaking it down by bitrate per "quadrant" isn't 100% accurate, though. With modern IPB codecs there isn't always necessarily a need for a 1:1 increase in bitrate in ratio to the resolution (i.e. 4 times the bitrate for UHD over HD). @LPowell or @Driftwood would be able to explain why this is is (scaling, quantization, etc), as I am no codec expert.

Also, depending on the implementation of the codec, 37.5mb/s can be plenty for HD (for most applications), look at how good the C100 internal footage looks at only 24mb/s. Compare that to a $400 camcorder that also does 24mb/s and there is a massive difference (and I don't mean from lens or sensor performace- just compression).

So even if the extra overhead for 4:2:2 and 10-bit (versus 4:2:0/8-bit) means the GH5 150mb/s is, per quadrant, no better than a c100... that's still pretty good. Not great, not amazing, probably not capable of holding extreme grades, but pretty good. And I hope that it will be better, as 37.5mb/s is 50% more than 24mb/s, and I don't think 10-bit and 4:2:2 need that much extra bandwidth.

Here's the thing : 150mbit fixed bitrate for 4K is not really enough. That works out to 37.5mbit for each 1080p quadrant of a 4K video - so just think of how compressed and nasty 1080p is at 37.5mbit. Secondly - if you still only have a 150mbit fixed codec, and you record 8bit input to it, and then compare 10bit input into same codec... guess what... you're actually destroying more data or throwing more data away to fit into the same bitrate. Third - Sebastian doesn't want to admit his skintone is blotchy. Sorry dude. Most of us who get too much sun exposure or have just come in from the winter cold have blotchy skin. Although his shots look like he might have been eating spaghetti. I'm far from a Panasonic Apologist. I despise despise despise the gh4. James Miller gh5 footage looks awesome (externally recorded). We can partially blame Panasonic and C5D for the results that C5D is getting - trying to cram more bits into a fixed amount of bit rate will always yield less than perfect results (barring some magic algorithm). Suffice to say Log 10bit is probably best handled with an external recorder and still requires careful treatment of white balance and exposure.

Ok so what sd card speeds are we going to need? for both the 150mbs and looking forward to the 400mbs in the summer?

@markr041 Depends a bit on what you do and what you want. I don't see the appeal of banding when material is slightly pushed, or all the wobble when you decide to pan a tripod a tad faster. When you need to work on footage a bit more, the benefits of higher quality material are more than helpful.

The first RED recorded 9-10 stops of DR and people went crazy how great it was for digital, and graded it to look great for cinema. But of course, anything under 13 stops is videoish and not cinematic... Hopefully one day we find words that are not as pedantic and generalized though :)

"The A7s II also features a low coloursubsampling and bitdepth, alongside horrific rolling shutter. High DR in low bitdepth is no fun."

Low DR with 10bit 4:2:2 is visibly ugly (videoish) compared with high DR and 8bit 4:2:0, though it may be less "fun".

GH4 vs GH5 in 1080P in DPREVIEW

I preordered mine on the jessops website the minute it became available after the official announcement from Panasonic on Jan 4th so would like to think would get one pretty early

My first post here so be nice. I took my nifty fifty (Canon FD 50mm 1.4) to a GH5 demo day today, because I know the images from that lens so well from the GH4, GH3 and GH2 (with Driftwood's awesome Moon T7 hack). Apart from all the talk about 10bit 4:2:2 and 4K 60p, there were 2 major things that made me pre-order the GH5, which are probably worth sharing here.

First, the 5-axis sensor stabilisation is jaw-droppingly good on the GH5. I dialled in the focal length of the lens in the stabiliser settings menu, and suddenly I could shoot handheld with my 100mm equivalent Canon FD lens from the 1970s for the first time ever. That sure put a smile on my face! I only use vintage manual lenses and the newer Voigtlander Noktons, so for me the new floating sensor in the GH5 is a total holy grail.

And second, the Panasonic rep said he'd been at a 2 hour-long Powerpoint talk about the GH5 recently, presented by none other than Nick Driftwood, in which Nick had said that the GH5 shadow detail is clean enough up to 6400 ISO. I pressed him on this point and he promised me that's what Nick had said. @driftwood Did he get it right?

The bad news is (here in the UK at least) that if you're wanting to get your paws on a GH5, Panasonic are telling their reps that there have been so many pre-orders the factory can't make them quick enough, so any orders placed now will effectively be on back-order with expected availability in May. So the smart thing to do is pre-order from the smallest local camera shop you can find, rather than the big guys like CVP or ProAV, as your local camera shop is more likely to be able to fulfil your pre-order from the first or second batch of deliveries towards the end of March and middle of April. And you're more likely to go to heaven if you support your local independent camera shop of course.

You can clearly see the GH5 is really 12 stops like the Fuji. Their 10 bit tests are pretty useless because they are seldom pushing where it is really needed. A good example would be a Chroma key edge between 8 and 10 bit to see where it breaks. Also you really cannot do a good comparison online on a JPG. You need at least PNG 24 and that is still not as good as uncompressed.

My bet is the 10bit 4:2:2 will trounce the 8bit 4:2:0 very easily. However I am still not ready to buy the GH5. The best thing it has going for it IMO if the IBIS which is a killer feature. However if Sony and the a7s III incorporate it I might just as well get that one. My GH4 is still fantastic and the GH5 doesn't seem a big step up in image quality to warrant an upgrade. I want more Dynamic Range and better low light and the GH5 is a very slight improvement in those areas compared to the GH4.

@Vitaliy_Kiselev

Cinema5d has very serious problems with many things in this so called review.

First they've disable the NR on the GH5 (at least that's what I understood) than complained they see noise in the shadows :)), so "the DR must be low". Heck I downloaded their test, brightened the shadows and applied a little bit of NR and whoops the DR is over 12 stops.

They complain about lack of detail but they've dialed the sharpness to a minimum cause it's to much...seriously?

@caveport , you make a very good point! They complain about bad color on Vlog but they edit the log profile with LUTS. :))

They see no advantage in 10 bits vs 8 bits but never show any example, like on a plain sky with a blue gradient + heavy grading.

They complain about soft 180 fps on the GH5 but never complain about the utterly crap Canon 1080p in DLSM's, which is nowhere near at 30fps compare the the GH5 180 fps.

Etc, etc.

I find cinema5d reviews very untrustworthy!

The metabones selling is sickening.. hyperlinked all over the place.. and classed as a "pro" for buying the camera, that I works well with the GH5