Hi, I have a em1 that I love, I recently started to shot nightscapes like milky way etc. wioth a star tracker. As you know the em1 has poor performance in long exposures shots taken without dark frame subtraction. I recently sold my G6 and I'm searching for another Panasonic camera as second body, I like the gx7 and the new gx8. I haven't found on the net information about these two cameras how perform in this situation, I know that omd's with sony sensors do a excellent job (I owned a em5) but I don't like other things and I prefer a Panasonic body. Have someone tried to shot nightscapes with dark frame off with gx7 or gx8?