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A half revolution is "Live Bulb". Thus, it is now possible to watch a picture in the beginning. Pressing the shutter opens the shutter and then you can watch as the image is exposed slowly. Whether this is now done in neutral density filter images, with fireworks or a thunderstorm recordings - even star trails you can now watch the development. At set intervals, the image is updated. If the image is complete, sufficient pressure on the trigger - and to make the closure. Light Painting? Here you can follow the live effect. This is not a gimmick - it's a hit! With the E-M5 long exposures are possible, one of which has previously only dreamed of. Old mechanical cameras had also been the possibility of "T" exposure - but they always looked at all the cameras after the first time what came out of it '. And when they had miscalculated, then you were when you were unlucky, stood one hours free in the cold.