Do it is possible, in movie mode or photo mode, to sum-up two or more (user-defined) frames with one or more criteria (for example only luma or luma+chroma and other summing algorithms) and display them on Live View display in real-time as they are summing one-by one or after every sum cycle, and then save every summed resulting frame as a photo or as a frame of a movie ? and/or saving a photo or movie frame of the current sum result at the pressure of a key ?
