Image courtesy: ePhotozine.
The picture on top os of the OM-D E-M1 sensor, and the area in the middle is the phase detection area (seen with the lines). It’s part of the full E-M1 review article posted on ePhotozine (Click here). The camera earned their “Highly Recommended” award
As the first Micro Four Thirds camera with no Anti-Aliasing filter, this means this camera should be, and thankfully is capable of the highest quality photos of any Micro Four Thirds camera, and when used with high quality prime lenses, the difference can be seen, although is quite subtle at times, with the previous model, the Olympus OM-D E-M5 already providing very sharp and detailed photos with prime lenses.
Also the Australian guys from Photoreview tested the E-M1 (Click here for the article) and the 12-40mm lens (Click here for the article). They also like the E-M1 a lot and this is what they write about the lens:
The 12-40mm f/2.8 lens is an impressive performer, delivering quality that rivals that of many DSLR+fast zoom pairings that target serious enthusiast photographers. But its great advantage is being able to do this in a more compact, lighter-weight unit. Fast focusing and near-silent AF operation also make this lens attractive.
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.