Andy and Koen give a tutorial

Date		9/27/2008 3:47:46 PM
Camera model		Canon PowerShot SD40
Shutter speed		1/20
Aperture		f/3.2
Maximum aperture		f/3.2
Exposure bias		-1.00
Focal length		6.3mm
Sensing		One-chip color area
Flash		Off
Metering		Pattern