Graph source: DxOmark.

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Focus Numerique (translation here) tested the E-M1 and as you see from the graph on top the E-M1 shows impressive results. A couple of years ago few would have believed a MFT camera can outperform a new ASP-C Canon DSLR :)

Photographyblog tested the Panasonic GM1 and writes:

In a nutshell, if you loved what you saw of the output of the GX7 but felt the body would be better even smaller, then the Panasonic Lumix DMC-GM1 could be well worth giving a proverbial spin.

E-M1 Store Links:
Olympus E-M1 body at Amazon, Adorama and BHphoto, Amazon DE (via DL), Amazon UK (via DL), Amazon ES (via DL), WexUK, Topshot FI, CameraWorldUK.
Olympus M. Zuiko Digital ED 12-40mm f/2.8 PRO Lens at Amazon, Adorama, BHphoto, AmazonDE (viaDL), Amazon ES (via DL).
Olympus E-M1 with 12-40mm Lens kit at Amazon DE (via DL), WexUK and CameraWorldUK, Amazon UK (via DL), Amazon ES (via DL).
Olympus E-M1 with 12-50mm Lens kit at Amazon DE (via DL), WexUK, CameraWorldUK, Amazon UK (via DL), Amazon ES (via DL).
Olympus EP-13 Eyecup for E-M1 at Adorama and BHphoto.
Olympus HLD-7 Battery Grip for E-M1 at Amazon, Adorama and BHphoto.
Olympus LC-62D Metal Front Lens Cap for 12-40mm at Adorama and BHphoto.
Olympus LH-66 Lens Hood for 12-40mm at Adorama and BHphoto.

F0.74 – The new Metabones Speed Booster – BMCC & BMPCC versions from Andrew Reid on Vimeo.

There is need of Megapixels, need of miniaturization and there is obviously the need for speed! If you want to go as fast as it gets you could try to emulate Andrew from EosHD (Click here). He used the [shoplink 43225 ebay]Nikon 50mm f/1.2 Ai lens (here on eBay)[/shoplink] in combination with the new Metabones Speed Booster. Yes, he used tw NEW adapters just announced at Metabones site (Click here). The bad news is that they work on the Blackmagic Pocket Cinema camera only because they will obstruct the mechanical shutter of the Olympus-Panasonic MFT cameras :(

Key features

• 0.64x Speed Booster for BMCC with 1 ⅓ stop increase in effective aperture (F1.2 to F0.80)
• 0.58x Speed Booster for BMPCC with over ⅓ stop increase in effective aperture (F1.2 to F0.74)
• Sensor 1.53x crop effective on BMCC
• Sensor 1.74x crop effective on BMPCC
• On Blackmagic Cinema Camera: true APS-C field of view from DX lenses (180° fisheye remains as such)
• Adds stepless aperture ring
• Nikon F-mount (compatible with legacy AI/S and modern G)
• $489 + shipping/tax
• Availability start of December 2013

Andrew writes:

Well the world has turned on it’s head once more. Suddenly a smaller sensor is an advantage. Remarkably a small sensor is now a hit in low light. This magic comes at a very small price… There’s some ghosting and reflection to watch out for but it occurs only very occasionally in real world shooting.

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Links to the Nikon Ai f/1.2 lenses on eBay:
[shoplink 43225 ebay]Nikon 50mm f/1.2 Ai lens (here on eBay)[/shoplink] [shoplink 43005 ebay]Nikon 55mm f/1.2 Ai lens (here on eBay)[/shoplink] [shoplink 43226 ebay]Nikon 55mm f/1.2 Ai lens (here on eBay)[/shoplink]

DxOmark (Click here) tested the MFT lenses on the new E-M1. Again no surprise to see the best lens is the Olympus 75mm f/1.8. But how does the lens score when comparing the E-M1 and the GH3? Here are the results:

E-M1 Store Links:
Olympus E-M1 body at Amazon, Adorama and BHphoto, Amazon DE (via DL), Amazon UK (via DL), Amazon ES (via DL), WexUK, Topshot FI, CameraWorldUK.
Olympus M. Zuiko Digital ED 12-40mm f/2.8 PRO Lens at Amazon, Adorama, BHphoto, AmazonDE (viaDL), Amazon ES (via DL).
Olympus E-M1 with 12-40mm Lens kit at Amazon DE (via DL), WexUK and CameraWorldUK, Amazon UK (via DL), Amazon ES (via DL).
Olympus E-M1 with 12-50mm Lens kit at Amazon DE (via DL), WexUK, CameraWorldUK, Amazon UK (via DL), Amazon ES (via DL).
Olympus EP-13 Eyecup for E-M1 at Adorama and BHphoto.
Olympus HLD-7 Battery Grip for E-M1 at Amazon, Adorama and BHphoto.
Olympus LC-62D Metal Front Lens Cap for 12-40mm at Adorama and BHphoto.
Olympus LH-66 Lens Hood for 12-40mm at Adorama and BHphoto.