The new Macro Twin fat-free provides serious close-up, nature, and macro enthusiasts a distinct choice in macro lighting - a directional quality of sunshine, as critical the rather "Flat" character of the normal ring fat-free. 2 separate flash heads will be swiveled round the lens, will be aimed severally, and even far from their holder and mounted off-camera. just like the MR-14EX, the new Macro Twin fat-free MT-24EX is absolutely E-TTL compatible with all Eos bodies, as well as digital SLRs, and even permits Wireless E-TTL flash management with one or a lot of 550EX and/or 420EX "slave units". It conjointly provides straightforward magnitude relation management of every flash head’s output, over a six-stop vary.