ePhotozine posted the full Panasonic G9 review:

The price of the Panasonic Lumix G9 puts it in to the professional area of the market, rather than enthusiastic amateur, and this could put some buyers off. However, there will be those that have the money and are happy to spend it on the camera, once the range of features available has been taken into consideration.

Noise performance is very good up to ISO3200, and it’ll be down to your own image needs whether you want to shoot at ISO6400. Colour reproduction is very pleasing, with good JPEG images produced straight out of the camera, with little or no need for additional editing. This will be particularly beneficial if you’re using one of the high speed shooting modes, as it will help speed up your workflow.

You can shoot at up to 60fps, using the electronic shutter, or up to 20fps with continuous AF, however, the camera will only take 50 photos before it stops shooting. If you shoot using the mechanical shutter, you can shoot at 12fps, and can take an impressive 600 photos! We were also impressed with the camera’s rapid and accurate focus for both fast moving subjects, and portraits.

The Panasonic Lumix G9, is one of the fastest shooting cameras available, and is available at a very competitive price point, being around £300 less than the E-M1 Mark II. If you need this kind of speed, or want to try it, then there’s not much that comes close to the performance of these two cameras. The G9 is also great to use, with the controls and menus neatly arranged, making it quick and easy to change settings, so that you don’t having to spend time studying the manual. The top LCD screen means you can quickly see your camera settings without having to hold the camera in front of you. 

And Dpreview addded the Panasonic G9 to their studio scene comparison:

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Panasonic Preorder links:
Panasonic G9 at BHphoto. Amazon. Adorama. FocusCamera. Wex UK.
Leica 200mm lens at BHphoto. Amazon. Adorama. FocusCamera. Amazon DE. Amazon UK. Amazon IT.

Join our Panasonic G9 Facebook group.

CameraJabber conclusion:

The 45mm f/1.2 is a high-quality lens that is a good match for the OM-D E-M1 II and E-M5 II, having weatherproof and dust-proofing and a solid build. It also delivers superb images with sharp details and attractive out of focus areas (bokeh). Distortion, chromatic aberration and vignetting are all controlled extremely well.

Ilya Varivchenko tested the lens and writes:

For two weeks that I played with it, I never once use anything else on the camera simply because my needs were covered by 99%. I can generally sell all my gear and buy only one this piece of glass. And this lens is not a an expensive toy, but a tool – something that works always and is absolutely predictable

Photographybog conclusion is:

In terms of image quality, the Olympus M.Zuiko Digital ED 45mm f/1.2 PRO delivers outstanding results. It’s just a little soft when shooting wide-open at f/1.2, but from f1/4 onwards it’s pin-sharp both in the centre and at the edges of the frame. Bokeh is beautifully rendered thanks to the 9 circular aperture blades, whilst vignetting, distortion and chromatic aberrations are all very well controlled. Overall, there’s very little to complain about in terms of the image quality.

Photoreview writes:

Subjective assessments of test shots showed them to be very sharp, even at the maximum f/1.2 aperture. The fast MSC autofocusing system and effective stabilisation in the E-MI Mark II enabled us to use the lens hand-held at very slow shutter speeds – as low as 1/10 second – and obtain a high percentage of sharp pictures.

J.S. Park: “I have completed a review of Olympus 45mm f1.2 PRO comparing it Panasonic 42.5mm f1.2.  I’d like to share it with M4/3 users.
Thank you.
http://lenswork.tistory.com/entry/Olympus-45mm-f12-PRO-Review-vs-Panasonic-425mm-f12”

The lens manual can be found here: cs2.olympus-imaging.jp/jp/support/dlc/archive/man_mzded45f12pro.pdf

Olympus 17mm f/1.2 PRO at Amazon, BHphoto, Adorama, GetOlympus.

Olympus 45mm f/1.2 PRO preorders at Amazon, BHphoto, Adorama, GetOlympus. Amazon DE. Amazon UK.