Alas, small size means small features in the SD40's case. The viewfinderless camera has only a 1.8-inch LCD, and it uses a relatively narrow angle of view for the 38mm-to-90mm-equivalent lens, the same as the SD30. Beyond the higher resolution, the SD40's most notable improvement over the SD30 is its new Digic III image processor. Canon claims the Digic III processor increases image quality, performance, and battery life, but we didn't notice any significant improvement over the SD30..



Link: CNET