Canon's Macro Ring Lite MR-14EX comes equipped with many features and capabilities. Utilizing E-TTL (Enhanced Through- The-Lens mode) technology, it takes full advantage of the flash performance of the Canon EOS-1V, EOS-3, and other E-TTL cameras, and also supports E-TTL wireless auto flash, when used with at least one Canon 550EX Speedlite flash. The circular twin flash tubes of the MR-14EX can fire at even power, or vary between themselves over a six-stop range. The controller unit has an illuminated LCD panel, and the MR14-EX also accepts optional high-capacity battery packs.
The MR-14EX attaches directly to Canon's EF 50mm f/2.5 compact macro, EF 100mm f/2.8 macro (both versions), and MP-E 65mm macrophoto lenses, and can also be used with EF 180mm f/3.5L macro USM via the Macrolite adapter 72C
Sophisticated control incl. Wireless E-TTL and Ratio Control w/ EOS-1v, ELAN 7 Series, Rebel T2, Ti, K2, EOS-1Ds / D Series, 20D, 10D, D60, D30, Digital Rebel. PowerShot G5, G6 and Pro 1.