When it comes to close-up photography, the Canon Macro Ring Lite MR-14EX II is in a class of its own. Redesigned as the perfect companion for contemporary digital SLR setups, this macro flash is the most advanced one Canon has ever produced. It has a maximum Guide No. of 34.4 ft./10.5m at ISO 100 and a twin-tube design where both flash tubes can be directed to fire independently or together. This gives you the flexibility to create sophisticated lighting effects that are infinitely adjustable in any lighting condition. The illuminated dot-matrix LCD makes it easy to preview your lighting effects, and the 12 custom functions let you tailor the light output to your specific needs.