This new Ring fat-free for close-up and macro shooting is loaded with options and capabilities. currently with Canon's E-TTL, it takes full advantage of the flash performance of the EOS-1v, EOS-3, and alternative E-TTL cameras. Circular twin flash tubes will fireplace at even power, or varied between them over a six-stop vary, and one or a lot of 550EX Speedlites is used as wireless slaves beside the MR-14EX. The controller unit currently has AN lighted full-info LCD panel and its accepts elective hi-capacity battery packs.