Bests & Worsts Reviews from Amazon

Received webcam today and installed it. I was not happy at all with the quality of the images or videos. I have gotten better photos from 2mp camera phones. I have an earlier Logitech webcam (C510) that takes much better pics. I was hoping to improve upon that. I am posting a picture of side by side images to show what I mean. The C615 on the left, and the C510 on the right. I am sure it's probably a defective camera but I think I will just stick with my C510 and return this for a refund. I have seen several other reviews with same complaint.