1. An image capture device configured to electronically focus an image, comprising: an image sensor; a lens configured to receive light; a reflective surface disposed so as to redirect received light from the lens to the image sensor; and an optical path length alteration device including a single electronically alterable mirror switchable between at least a reflective state and a pellucid state, the single electronically alterable mirror being disposed between the lens and the reflective surface, operable to selectably alter an optical path length traveled by the received light between the lens to the image sensor between at least a first optical path length when the single electronically alterable mirror is in the reflective state and a second optical path length when the single electronically alterable mirror is in the pellucid state.