Yet it's capable of grabbing the action from clean across a not-terribly-well-lit gymnasium.
I'll note that the GM1 was having an easier time of getting fast shutter speeds in the available light than the mighty EOS-1Ds Mark II. It may be just a pocket Micro Four Thirds enthusiast's camera compared to a monster full-frame Canon pro body, but a lot of water passed under the sensor bridge between 2004 and 2013.
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