If you need super fast frame rates, modern cameras from companies like Olympus can shoot at up to 60 frames per second in electronic shutter mode, so in that case, electronic shutter is probably appropriate.

If you need to photograph super fast motion, like airplanes flying by or animals or birds on the move, then you may want to stick with mechanical shutter. Electronic shutter doesn’t always work well with moving objects because of a concept called “rolling shutter.”