Olympus rolled out the big numbers for its announcement of the update to its OM-D E-M1 flagship Micro Four Thirds mirrorless camera, the OM-D E-M1 Mark II: a new 20.4-megapixel sensor with improved dynamic range, a new Dual Fast autofocus system with 121 phase-detection and 121 contrast-detection points, Cinema 4K/30p video recording, and 18 frames-per-second continuous shooting with autofocus (60fps if you don't need AF).
The new sensor draws less power and a faster readout speed, though it's supported by an updated image processor with 8 cores -- that's got to require some extra juice. The processor has updated autofocus algorithms as well, with better subject isolation for tracking. And a new Pro Capture mode starts bursting when you prefocus, keeping the last 14 frames before you take the shot.
It's the same size as the original E-M1, though it looks a hair more like a dSLR and has a bigger grip plus a new higher capacity battery with faster charging. Dual SD card slots and a battery grip with a dedicated keypad round out the necessities.
Technically, Olympus considers this a "development announcement," though that's probably because there's no price or availability ("later this year").
Olympus stresses that the combination of compact size and speed makes it a desirable alternative to APS-C. While I don't want to diminish the company's achievement -- I think the EM1M2 sounds like a really nice camera with a great feature set -- keep in mind that even though it's the same resolution as competing dSLRs, the APS-C sensor in those cameras is much bigger, they output 14-bit raw files vs. the EM1M2's 12 bits and they hit higher ISO sensitivities. Plus there's a lot we don't know yet about it, including how many shots the buffer can hold, battery life or price.
Source :http://www.cnet.com/
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