The highest video resolution supported by the PowerShot SX510 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 frequently found video resolution supported by digital cameras of a similar spec and age to this digital camera. 640 x 480 pixels is also supported by this Canon digital camera. In addition, this camera support a video resolutions 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 amongst all cameras of this type and age.
The worst supported video resolution amongst comparable types of digital camera is 320 x 240 pixels.