This is a amazing webcam!!!even my room is dim with no source of light just my LCD screen,my image is still captured perfectly! Do no hesitate to buy this amazing product!A4tech is the best! Operating System Microsoft Windows® 98/ME/2000/XP/2003/2004 Focus Range Automatic focus,30cm to infinity Lens Specification F=2.4,f=4.9mm,View Angle 54° Weight 0.12 Ib. Product Dimension Fuselage+Clip: 1.8(L)x0.5(W)x2.4(H) in. Image Sensor 1/4" color progressive CMOS Total Price 1250