I have been trying to use this excellent facility on my xpro3 but seem to be doing something wrong. I take my three shots by pressing OK then select BACK to finalise the procedure but I never get a composition when I preview the photo, all I get are the three individual photos. What an earth am I doing wrong, I have tried this for all the options, DARK, ADDITIVE etc to no avail. Is there a setting on my camera that is stopped me from doing this? Thanks in advance. redsquare