Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: NO IMPROVEMENT OVER Logitech 3000
Review: I purchased the 4000 in order to improve the picture quality of my useful Logitech 3000. Not only was there no discernable difference in still picture quality but the video mode was shakier. Autofocus was less clear than manual. Face tracking was erratic. DON'T BUY THE 4000 if you already own the 3000 or have the option to purchase that model instead.
