canon g5 For the first time in its range of digital cameras-up, Canon has introduced a flash zoom feature, the HF-DC1. Linked to the zoom, the zoom mechanism narrows the flash angle of the race to extend the flash range telephoto, and expand the options for night and indoor ranges. When the guide number of 18 (ISO 100 m), a slave flash automatically fires in synchronization with the camera flash, regardless of pre-flash. It can be adjusted to three levels of power based on the opening camera. The unit is connected to the editing machine, which maintains the ability to install the camera and flash tripod.To improves flash A510 and A520 digital cameras, Canon has developed a High Power Flash HF is called - DC1. The flash is a supplementary unit that operates wirelessly and increases the effective flash range up to about ..