Backscatter Mini Flash MF-1 and Optical Snoot OS-1: A BlackFriday/CyberMonday-Likedeal. I’m a senior who is no longer scuba diving and doing underwater photography. Toward the end of my diving activity I was beginning to experiment with macro photography and using the Backscatter mini strobe system MF-1 and OS-1. Backscatter has since upgraded to MF-2 and OS-2 which has added more bells and whistles to the unit at an increased price. Selling for $125 This flash and snoot system is compact and light weight, so ideal for use with compact camera underwater kit and ease of handling. Battery included.