Canon Macro Ring Lite MR14-EX Now with Canon's E-TTL, it takes full advantage of the flash performance of the EOS-1v, EOS-3, and other E-TTL cameras. Circular twin flash tubes can fire at even power, or varied between them over a six-stop range, and one or more 550EX Speedlites can be used as wireless slaves along with the MR-14EX.
Canon Macro Twin Light MT-24EX The new Macro Twin Lite MT-24EX is fully E-TTL compatible with all EOS bodies, including digital SLRs, and even allows Wireless E-TTL flash control with one or more 550EX and/or 420EX "slave units". It also provides easy ratio control of each flash headís output, over a six-stop range.
Olympus Macro Ring Flash 1200 The ring flash unit gives shadowless lighting which is ideal for macro medical and scientific photography. The Macro Flash Controller can be used with the Twin Flash 1200 without any attachment adapter.
Olympus Macro Twin Flash 2400 The Twin Flash 2400 features flexible and ideal lighting for both macro nature photography and close-up shooting of small collectibles. The Macro Flash Controller can be used with the Twin Flash 2400 without any attachment adapter.