I have both the 100mm f2.8 USM macro lens and the MR-14EX ringflash and have found the combination to be top class. The lens is very impressive both in sharpness and contrast. I have been using it mostly for botanical photography and mainly in manual focus mode for close macro work but the AF is also fast, accurate and silent. I have been using the ringflash with the camera in mainly manual mode ( EOS3) with a shutter speed of 1/125 as I have found that using it with camera AV mode results in very slow shutter speeds and needs a steady tripod. The ability to alter the ratio of the two halves of the ring is very useful and adds significantly more medelling than is usual with such flashes. I haven't yet tried the master - slave setup with my 550EX but am looking forward to doing so soon. I would certainly recommend this combination for serious macro work. Alex Wilson * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
