Capture clearly illuminated pictures even under low light conditions, using the Sigma EF-610 DG ST shoe mount flash with your camera. This Sigma camera flash for Canon has a guide number of 61 feet (105 mm), ensuring that even a distant subject is adequately illuminated. The 24-105 mm zoom range in this shoe mount flash helps to widen or narrow the field of illumination according to your requirement. The bounce and swivel adjustment of this Sigma camera flash for Canon helps soften the light by reflecting it off walls, ceilings, and reflectors. Moreover, the Sigma EF-610 DG ST weighs only 11.3 oz, thus it can be carried along easily.