The camera companies continue to feed the megapixel race.

Three megapixels is all that most people need, for photos of friends, family, site seeing and the occasional sporting event.

But more megapixels do have meaning for many people who are more into photography.

The new Canon SD450 and SD550 have added a feature that has not been available on smaller cameras.
Continuous shooting.

Hold down the shutter button and the camera will continue to capture photos, at several shots per second, until you let up on the button or run out of memory.

It is a great feature for action shots, but hardly necessary for taking a photo of Uncle Bob and Aunt Lil standing in front of the Lincoln Memorial.