The lowest megapixel of similar spec webcams that have been on the market for around the same time as this webcam is 0.3MP and the highest is 20MP. With a megapixel of 8 megapixels, the LogiLink UA0172 has one of the higher megapixels amongst webcams of this age.
There are a number of alternative 8MP webcams currently available that you might want to look at including because of its better review score, the Creative Labs Live! Cam Connect HD (£60.72).
What does "megapixel" mean?