using ML on Canon 50D in HDR mode set for 7 exposures as 0, +++. I am getting 8 exposures with the first two being exactly the same exposure. Also, CF card is filling up with BMH, LUT, DAT as well as other files even after reformat in camera making it a pain to deselect than reselect CR files for transfer to computer. What files can be deleted and how do you maintain CF card afterwards. Tried to do search but came up with nothing on either topic.