Canon Technology Maximizes Quality and Performance
Canon's DIGIC II Image Processor is designed to improve processing speed and image quality, so the DIGIC II processor provides markedly faster camera startup, autofocus and playback plus it assures that every image is more colorfully vibrant.

Digic II Image Processor
The PowerShot SD400 Digital ELPH's UA Lens features a glass-molded Aspherical design with an ultra-high refractive index. The advantage? You get exquisitely accurate images from a lens that's compact enough to fit in a super-slim camera body

UA Lens Technology