TechRadar: Canon introduced the SX40 in September, at the same time as the compact PowerShot S100. The SX40 is one of a new generation of Canon cameras to be equipped with the fast Digic 5 processor. Canon promises that this boosts the HS system and now also supports Full HD (1080p) video shooting.
On board the camera is a 35x zoom, making it the longest zoom lens on any Canon compact camera. In 35mm terms, that makes the zoom range from a wide angle 24mm, to an incredible 840mm - and all this is optical zoom, not digital.