I own both, multiples in fact. I like the G9 more than the M1 Mk2 and Mk3. I love how the Olympus ones look, and the slightly smaller form factor does make a difference over the course of a long wedding day. But the G9 wins for me because of body detect, and its ease of use switching from something like face detect to manually moving the focus box around; the Mark 2 forces you to press a button and move a dial, the mark 3 forces you to press a button....whereas with the G9 if you bring it up to your eye and the face detect locks on to the wrong face, you just move the joystick and it automatically overrides the face/body/subject detect.

And the viewfinder on the G9 is substantially better too.

You many already know, the AFL/AEL button on the Olympus can be changed to function as the on/off making it a right hand operation. Great video…thanks!

I had a G9 until about a year back and I must admit, I now wish I had kept hold of it. I went full frame with an old Sony A7 for better quality portrait shots with an 85mm on a full frame, but the G9 was an enjoyable camera for the long end stuff with a 70-300mm strapped on to it

Don‘t forget Animal-AF available for the G9 in latest Update-Version.

Thanks for that.... very very detailed... I can tell you actually used these cameras for a while and didnt just look at spec sheet ahaha

I have a G9, and a OMD-5 MKIII, which has similar attributes to the OMD 1 MKII. The OM5 is very light, and a much less professional feeling camera. For me, the main difference is the lack of phase detect autofocus. While I agree with all your observations when I'm shooting with my Panasonic Leica 100-400, I get way more keepers when shooting birds with the Olympus. I also believe IBIS is a little better in the Olympus bodies, but the G9 is excellent, especially compared to my Sony A7II and A7c. (Of course, Sony autofocus blows away Panasonic or Olympus)

Finally, a non-hysterical discussion. Thanks a bunch.

I appreciate seeing the gear on hand, gives a nice idea of how they handle, lots of reviews lack that as just talking heads

Great video. I use the Panasonic Lumix G9 with the Panasonic Leica DG Elmarit 200mm f/2.8, mainly for wildlife photography. I have been very happy with it.

I too am a big fan of M4/3 second hand.  Having recently purchased a GX9 for US$355 with only 113 shutter count (w/12-32 kits lens, OEM grip, & battery) and the G81 for US$465 with only 4000 shutter count (w/12-60 kit lens, OEM battery/kit extension, and 2x batteries), I am very impressed with the capabilities of these two units at such bargain prices.  I do a lot of hand held photos and occasionally video, mixing it up between modern AF and manual vintage lenses. Both are in mint condition and fit the bill perfectly for my use.

How time flies! I’ve had the E-M1 MkII for over two years now and I’ve just ordered a used Lumix G9 to replace my old G6 and G7 cameras. For small/light cameras I have a GX80 and E-M10MkII but must say I will miss the G6 especially as it was my first M4/3 camera bought ten years ago. Will probably get it all finalised by the end of next week

Fantastic real world comparison video 👍

There is a wide eye-cup for Olympus, it may only be available from Japan. I have one on my E-M5ii.
The G9 allows me to put +/-EV on the Command Dial, the wheel on the back. So when shooting in Manual mode with Auto-ISO, I can fiddle the +/-EV as I like. I've not found another MFT camera that can do this. Neither GH4 nor E-M5ii can do this.
On Lumix we have for a long time been able to assign Metering Mode to a Fn button. On Olympus we have to go through the Menu, quickest from the SCP screen.
The Lumix Dual-IS needs a mention. Olympus has Synch-IS but it doesn't work on Lumix OIS lenses. For wildlife using the Leica 100-400 the Dual2 stabilises the monster lens so well during framing it can instantly grab an AF-Lock hand-held. The Body-IS on the E-M5ii is really only good for hand held framing up to a lighter weight 200mm lens after which is struggles a bit. The no-OIS Olympus 45mm is a telephoto and enjoys some Body-IS which e.g. GH4 cannot provide.
The E-M5ii is tiny compared to the G9 and GH4 but has great haptics. It will take a SDXC-II card. Regarding cards, big is good but faster is better. There is a warning in very small print in the manual that the sensor can overheat when shooting long video; it tinges magenta. I had to get a G7 as B-cam to the GH4 because the E-M5ii could not do that job. I can't really recommend the G7 other than it shoots good video (I shoot 1080p too). I've been using MFT for a long time. I'll choose the camera for expected purpose, I don't always want to lug a big brick about; the pocket size E-PL7 with PZ14-45 is even smaller than wife's GX7. There is no 'best' camera, they all have different jobs. I still use my cuddly G5, I traded the E-PL2 long ago.
Regarding the G5, reviewing the photo will appear blurred, low pixel count on EVF and LCD, but on computer screen perfectly sharp. Until the pixel count approaches that of a screen it will appear a trifle fuzzy; wifi can throw the pics onto a fondle slab for review.

This came on my feed right when I was about to google it lol

Fantastic tutorial on both cameras!!!!!!

I own the OM-D EM1 mk2, and it's been my go to camera for a few years now. I've never owned the G9 but I've been interested in it. Great comparison, and thanks for sharing.

I absolutely love the color science of the Oly ‘em-1 but I have lost opportunities on nearly every shoot trying to quickly navigate the menus-this is so frustrating.

An excellent comparison Brian, however I tried the G9 in a camera shop (I was upgrading my GX7 because it got damaged). I found it very bulky for mf3's and quite expensive, at the time.
So I went for the GX9, I already have Nikon DSLRS. I love it and with IBIS the quality hand heald is excellent - I don't do Video which it's not recommended for 📷👍

4k50 on the G9, not present on the Olympus

I understand what you say about the range finder style cameras. I'm left eye dominant and for me DSLR  style suits me better.