The PowerShot SD400 is a 5.0 Megapixel camera unrivaled in its category. With an ultra-thin Digital ELPH style, an impressive set of high-end features and exclusive Canon innovations and technology, you’ll achieve the results you’ve been dreaming of - and have a great time doing it.
Teller in English has a review posted of the SD400. He writes-

“SD400 has nice appearance even though it’s nothing outstanding (unless you’re a chrome fan). Fast turn-on time, fast focusing results in very short wait times and less missed oportunities. On full automatic this camera is very flash-happy wanting to brighten up the world even when in my opinion there’s plenty of natural light. But flash is well balanced and I got many natural looking results.

Battery life seems to be very good. When I got the camera for testing someone had forgotten to send the power adapter cord but as the battery seemed to be full enough I didn’t bother. After filling up 512 SecureDigital card with photos and movies (yes, I actually tried the movie mode this time), doing a lot of reviewing etc the battery still showd no signs of getting tired. Only after I had loaded everything to my Mac did red battery sign light up.”

Canon Powershot SD400 5MP Digital Elph Camera with 3x Optical Zoom

Features:
Sensor: 5 megapixels
Lens: 35-105mm F2.8-4.9 (35mm format)
Picture size: 2592 x 1944, 2048 x 1536, 1600 x 1200, 640 x 480
File formats: JPEG (Exif 2.2), AVI
Sensitivity: Auto / ISO 50 / 100 / 200 / 400
LCD screen: 2-inch TFT
Memory card: Secure Digital
Dimensions: 86 x 53 x 20,7 mm
Weight: 130 g