The highest video resolution supported by the PowerShot SX40 HS is 1920 x 1080 pixels. That's over six times the video resolution of a 640 x 480 pixels digital camera, which is the most common video resolution supported by digital cameras of this type and age. 640 x 480 pixels is also supported by this camera. This Canon digital camera also support a video resolution of 320 x 240 pixels and 1280 x 720 pixels. A video resolution of 1920 x 1080 pixels is equivalent to Full HD video. You will require a Full HD TV or better to appreciate this level of detail.
This digital camera's video resolution (1920 x 1080 pixels) is actually the best supported video resolution across all digital cameras of this spec and age.
Across comparable types of digital camera the worst supported video resolution is 320 x 240 pixels.