The FaceCam 321 has a maximum video resolution of 640 x 480 pixels. That's 67% less video resolution than the most common maximum video resolution of 1280 x 720 pixels.
This webcam's video resolution (640 x 480 pixels) is actually the worst video resolution across all high megapixel count webcams that have been on the market for a similar time to the FaceCam 321.
Across similar types of webcam the best video resolution is 1920 x 1080 pixels.
If you are looking for a webcam with a higher video resolution then you might also want to consider the Logitech B910 (£41.99) (1280 x 720) which also has a higher rating.