Shutter
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Shutter

The G100 has a compact shutter unit originally developed for the smallest Micro Four Thirds camera: the DMC-GM1.

It's simpler, mechanically, than most shutter mechanisms and includes only a return shutter: the first curtain that begins the exposure is provided electronically, by rows of the sensor being activated, one after the other. The shutter is relatively slow, which limits its fastest exposure to 1/500 sec and its flash sync speed (the shortest duration in which the entire sensor is exposed at the same time), to 1/50 sec. Shutter speeds from 1/500th up to 1/16,000 sec are provided by using a fully electronic shutter.

When shooting with the G100 we found P and Auto modes seem to try to keep the camera within the EFCS shutter range, unless using the full electronic shutter is unavoidable, even if this means stopping the lens down well into diffraction-blurred territory.