1. A method of obtaining a sequence of images of a scene via an imaging device having a plurality of photosensitive cells arranged in an array to form a frame region, the frame region being composed of a plurality of frame sub-regions, each frame sub-region corresponding to a sub-set of the photosensitive cells each sub-set of photosensitive cells having an exposure time duration, wherein the exposure of at least some of said frame sub-regions occurs at different times during a total time of exposure of the frame region, the method comprising: illuminating the scene being imaged at a plurality of flash events; acquiring a set of frames of the scene; and constructing a sequence of images, each image being constructed from frame sub-regions of at least two acquired frames; wherein the time interval between consecutive flash events is set, so as to shift temporally from frame to frame the time of occurrence of a flash event with respect to the start of a frame, the time interval being set to be greater than or equal to the sum of the exposure time duration of a subset of the plurality of photosensitive cells and the time duration of the flash event.