Canon Technology Maximizes Quality and Performance
With DIGIC III, you get images of superior quality, the camera functions
at top efficiency and battery life is significantly enhanced. What's
more, DIGIC III enables Canon's newly improved Face Detection Technology
and Red-eye Correction to give you better, more true-to-life people
shots. Simply press the Shutter Button halfway down, and the PowerShot
A570 IS automatically pinpoints the faces in the scene and chooses the
ideal focus point. To keep every face looking bright and natural - without
scary red eyes - the camera controls exposure settings and flash, so
every shot is just what you were shooting for.

DIGIC III Image Processor
DIGIC III features Face Detection AF/AE, which finds multiple
faces in the frame and sets the most suitable focus point, when the
shutter button is pressed halfway. And an additional new feature, Face
Detection FE adjusts the flash, based on a person's face on the
screen. Exposure and flash are controlled to ensure proper illumination
of both the faces and the overall scene, eliminating the common problem
of darkened or overexposed faces.

Red-Eye Correction detects and automatically corrects red-eye
during playback for both regular and flash photography. In unusual cases
where red-eye is not automatically detected, it can easily be corrected
manually during playback mode from the LCD screen.
iSAPS Technology is an entirely original scene-recognition technology
developed for digital cameras by Canon. Using an internal database of
thousands of different photos, iSAPS works with the fast DIGIC III Image
Processor to improve focus speed and accuracy, as well as exposure and
white balance.

Diagram of Photographic Space