Panasonic says blurry images issue solved on Lumix GX1 with G X Vario PZ 14-42mm

kenw wrote:

All m43 cameras have mechanical focal plane shutters.

A few m43 cameras have a super high speed burst mode based off of the electronic rolling shutter typically used for video and live view. In these modes the images produced are at reduced resolution.

Mechanical shutters are used because the end result is superior image quality. Electronic rolling shutters can not be used without a significant loss of image quality for stills. Electronic global shutters take up significant chip real-estate (among other issues) and would negatively impact both high ISO noise and low ISO dynamic range so no one uses them for photographic cameras (but for something like a machine vision system it is worth the trade off and that is where you'll find them implemented a lot).

A few manufacturers (Sony and Canon) implementing a "electronic first curtain" shutter mode in which an electronic rolling shutter is used at the start of the exposure and the mechanical curtain at the end. This eliminates the shutter movement at the start of exposure (great for microscope and telephoto) with no impact to image quality. I wish Olympus/Panasonic would do this too.
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Ken W
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