"Picky Details" for the Canon SD550 digital camera
(Timing, Power, and Storage Info)

Timing

When you press the shutter release on a camera, there's usually a lag time or delay before the shutter actually fires. This corresponds to the time required for the autofocus and autoexposure mechanisms time to do their work, and can amount to a fairly long delay in some situations. Since this number is rarely reported on (and even more rarely reported accurately), and can significantly affect the picture taking experience, I routinely measure both shutter delay and shot to shot cycle times for all cameras I test, using a test system I designed and built for the purpose. (Crystal-controlled, with a resolution of 0.001 second.) Here are the numbers I collected for the Canon SD550:

Power

The Canon SD550 uses a custom rechargeable LiIon battery for power.

The PowerShot SD550 uses a custom rechargeable 790mAh Lithium Ion battery for power. The table above shows maximum number of photos and playback time, based on the CIPA standard.