The Canon Macro Twin Lite MT-26EX-RT is a twin-head macro flash for close-up and macro photography with Canon EOS cameras. Its two flash heads mount on a ring around the front of a macro lens and can be angled and adjusted independently, so you can shape the light on insects, flowers, jewellery, products and dental or medical subjects. The control unit sits in the camera's hotshoe and supports E-TTL and E-TTL II automatic flash, manual output and high-speed sync, with a combined guide number of 26 m at ISO 100. It also includes Canon's radio wireless transmitter, so it can trigger compatible Speedlites off camera. It runs on four AA batteries and weighs about 570 g. Note: the part number 2398C003 is the MT-26EX-RT model. After comparing online prices, www.marvel.co.za should be the cheapest on this product.