The MR-14EX II Macro Ring Light from Canon is designed for use with a Macro lens for close-up photography. With a guide number of 34.4' @ ISO 100, its twin tube design allows each flash tube to fire independently, or simultaneously. White LED focusing lamps and two types of modeling lights allow for accurate previewing of the light's effect.
An illuminated dot-matrix LCD screen lets you make adjustments to the flash in both bright- and low-light situations. The MR-14EX II has 12 custom functions, and supports wireless E-TTL when linked with one or more Speedlite 600EX-RT flashes.
The ring light can be powered by 4x AA batteries or an optional CP-E4 battery pack.