GH5 vs GX9- Do Bit Rates Matter? 

Just subscribed because I really like how your detailed approach is conclusive and focused on QUALITY, instead of just giving random ideas (like a lot of RU-vidrs do...which I still subscribe to at times, but I don't learn as quickly from such.)

Thank you! Very informative. You answered a bunch of questions that I had. Top notch.

Excellent video! Another advantage of using All-I is when panning it seems to minimize judders/stutters with GH5

Great information and thank you for the education!

Thank you for putting this together!

Nicely explained!👊

I switched from a GH5 to a Sony a7III and the difference is absolutely massive. Almost nothing beats the GH5s image quality and everyone raving online about the mid range sony's is a liar. I'm trading this thing in for a Sony A7SIII tomorrow. Vlogging on a gh5 was hard because of crop factor, low light and autofocus, but the image quality was insane. I hate camera brand fan boys who will lie to peoples faces to promote an inferior product just because of something like auto focus.

Great stuff!

thanks very much for all the great info.....and for take your time to teach us something useful......best

Very excellent.. great work!

The GX9 shooting 4k crops down to actual 3840x2160 pixels on the sensor, so you end up with a sensor area smaller than an RX100 pocket camera. That’s also why you see such a big crop in focal length. The GH5 (and G9 after 2.4 firmware update) use the entire sensor readout in 4k. In 1080 I believe the GX9 also uses the whole sensor, but for some stupid reason they won’t let you shoot 1080 at 24fps. I gave up on video with my GX9, just use the G9 now.

You don't know how much testing and how much research it took to learn this.😂I should of just waited for your video. This was so perfectly made, describe and just the hard work payed off. Using g85, did you keep noise reduction at 0.

Thanks for such an in depth look at bit rates between the two cameras. I have a G9 + 100-400mm Leica mostly for sports and wildlife (BIF mostly) and have a secondhand GX9 coming for the sports closer action using my 14-140mm lens. Is there anywhere for Panasonic cameras at least where you can compare video bit rates etc? Is there a spreadsheet one can view anywhere? Otherwise it is such a huge task to manually do your own detailed comparison. Another highly regarded Panasonic camera for video was the FZ2500 which has some high bitrates.

Firstly thank you for the video. I'm completely new to filmmaking. I'm stuck choosing between GH5 and G85. I had G85 in mind considering its budget but should I go for GH5 all the way, just being an enthusiast!

great infos.. hope you can make a comparison between off and On IS in a gimbal,.

I recorded a drive through the damage of hurricane Michael using a GoPro at 1080. I sped it up 16x and put it on RU-vid and was horrified at how much RU-vid crapified my video. I redid it at 8x and up-rendered it to 4K. When watching it on RU-vid at 4K it approaches the video quality I see on my computer when looking at the 1080 version. RU-vid allows more data per minute at 4K than at 1080. I did another drive through Dallas/Ft Worth and it wasn't crapified as much by RU-vid. The difference is all the trees needing a way higher bit rate in Florida versus blue skies in Texas. So if you're recording at 1080 you might want to convert it to 4K before uploading to RU-vid.

Great video Kim. You need more content. I enjoy your work. I have shot in 150mbs and 100mbs in my g9 and I honestly can't tell the difference. I wish I could compare if my camera could record at 400mbs.

Totalmente de acuerdo, gracias.

Hey I talked to you before about what camera to get. I followed your advice and bought a G9 and love it. However I noticed a crop on my lenses in 1080 and 4k and 1080 is worse than the 4k. The lenses look way wider on my g7. My first thought was it was from the stabilization but it is still there when I turn it off. Any ideas or is that just how it is?

itd be cool to do this video with the g9..but man I think I kinda liked the gx9 in those side by sides

Would you suggest me to keep the noise reduction on 0 because I have read that it is too strong and especially on the avchd codec,it mushes up the image

Dude. Where are you!?

It's nice to see there is a difference between bitrates, but it's something that depends heavily upon one's needs and intended use case. There is a part of me that's rather curious as to what the difference between a G7/G85/G95/GX9's recording 1080P at 28Mb/s and a GH5 recording 1080P at 200Mb/s would be, although I suspect in most cases that's probably going into overkill territory as you're now eating up 12GB of hard drive space for every minute of footage versus just 6GB at 100Mb/s or 1.68GB at 28Mb/s. I wonder if part of the reason for the difference in sharpness between the GX9 and GH5 is due to the oversampling the GH5 does, since it uses the full image sensor for capture. I do have to agree though, my my, that 400Mb/s footage..!!

I just learned you exist. would it be possible for you to work on a video explaining the purpose of focal lens? Like I know 25mm is for portrait, 7mm is wide angle so I guess it's good for vlogs. But I don't know 35mm, or 14 or 17. everything plus 100mm I guess is for zoom but it is all very confusing. Thanks, love your content

Great work! What was the GX9 highest bit rate. Was it 10 bit or 8 bit?

You did something wrong in this test because i get completely different results in my gh5 bitrate tests. All-i is a little bit better quality, especially compared to fhd longgop vs all-i, but not as much as in this video. i feel more like in your test longgop is a bit out of focus. And as I see here , all-i and longgop colors also are very different. I get colors just a little different, barely noticeable, but here I see very different results. I think something is wrong with the video test you did.

Kim, think you will ever come back to RU-vid?

A megabyte is a "package" of 8 megabits, a gigabyte is a "package" of 8 gigabits. Powers of 2 are extremely common in computing and a byte = 8 bits (2*2*2) ends up being really useful (albeit confusing) in descriptions of capacity and capability with computers.

Yo Kim, where have you been man? Been 3 years...i hope youre good

Your shadows looks strange, man..... Yes, on this video, not on the test videos you made :)

GX series is photo camera.

Please note that this is just commentary from someone who sort of enjoys math - I'll post my other thoughts in a different comment just to keep them separate. I'm terrible at writing things in a manner that they can be read in a way that's more neutral, or positive by the person reading it, and meant this to come across as just a neutral kind of comment. ^_^;;; A few things to note - you regularly use lower case when talking about the abbreviated form for megabits - mega is shorthanded with uppercase, so megabit would be written as "Mb". Writing it as "mb" would imply milibits, which is a noticeably smaller number at one thousandth of a bit, versus a Mb, which would be one million bits. The annoying part though with math is when you convert from bits to bytes, because there's actually two measurement systems for data. While it is true that there are eight bits in one byte, we have two measurements for what constitues a megabyte. The first one is 2^20 (commonly abbreviated as 1024x1024, aka 1,048,576 bytes equalling one megabyte, or MB), and this is the original computer programming version. This number is represented in parenthesis on OS X as well as Windows. The confusion comes in when we go with what the storage industry decided was the "better" option, where one megabyte equals 1,000 kB, made more than likely under an assumption that such would be easier for people to understand. They tried to bring in their own wording for sizing in the form of kibibyte, mebibyte, and gibibyte (and kiB, MiB, and GiB units), however in common belief the storage industry's version overwrote the actual proper definition. This is why we have 500 GB hard drives that only store 465.6612 GB - the operating system is calculating it based upon the 2^20 methods as originally written - 500 billion bytes is equivalent to 465.6612 GB using the storage industry's definition.

nice class is in session btw kim no shade but idk what you did but to me you kinda look like you are made of plastic bro lol ... I just got my 2nd g7 swear i love this thing more than my g9 ...the g9 is lucky it has a few extra features or id sell it in a second and replace it lol