The 10-megapixel Canon PowerShot SD900 manages to be stylish without being inconvenient or awkward. Its sturdy metal body, an attractive matte-gray with black accents, is smooth and slightly curvy, and at 6.7 ounces and 1.1 inches thick, it's just the right size to fit into a jacket pocket. All the controls are on the camera's right side, so nearly every button is within thumb's reach for comfortable one-handed use. A 2.5-inch LCD screen takes up most of the camera's remaining back panel but leaves enough room for an optical viewfinder. The viewfinder is small and awkward, but it provides a welcome alternative to the LCD.
While the SD900 is heavy on style, like most of the SD series, it's pretty light on features. You can adjust the white balance, the exposure compensation, the ISO sensitivity, and the metering settings, but in true point-and-shoot fashion, most shooting happens with the camera in automatic mode or through its handful of scene presets. It offers 30fps VGA movie capture or XGA (1,024x768) movies at 15fps.
Unlike the SD800 IS, with its relatively fast, wide-angle lens, the SD900 sports a rather mundane f/2.8-to-f/4.9, 37mm-to-111mm-equivalent model. It features the recent Digic III image processor, which Canon claims improves performance, image quality, and battery life over the previous chip. We've haven't seen any significant improvement over past-generation cameras, but the SD900's predecessors, the SD600 and the SD630, already boast strong performance and image quality.
The Canon PowerShot SD900 is a moderately fast shooter, especially for a 10-megapixel model. After waiting 1.3 seconds from power-on to first shot, we managed to snap one photo every 2.3 seconds. With the onboard flash enabled, that wait increased to a still-respectable 3 seconds. The shutter felt quite responsive, lagging only 0.5 second in bright light and 0.9 second in dim conditions. Burst mode was predictably slow, shooting a full-resolution photo once every 0.9 second.