@patiferoolz
not sure how accurate this is but its a step to what you are looking for, i use 320,640 or 1600 sometimes 3200, cleanest results iv had using them.
http://www.dpreview.com/forums/post/52070850
not sure how accurate this is but its a step to what you are looking for, i use 320,640 or 1600 sometimes 3200, cleanest results iv had using them.
http://www.dpreview.com/forums/post/52070850