<p>I normally do my night shots (Milky Way, etc.) with the 6D at around ISO 3200. Does anyone know how the new 5Ds or 5Dsr compare with the 6D at 3200 - same, better, or not as good? All I've read is that the new cameras don't go higher than 6400 (but I'm really not interested in much higher than 3200.)</p>