Vivitar Series 1 28-300mm f/4-6.3 is a lightweight and compact lens that covers wide angle to telephoto lengths. It has an effective 29-295mm focal length. The lens construction on 17 elements in 15 groups includes superior aspherical optics to overall enhance contrast and edge-to-edge sharpness throughout the zoom range. The multicoated surface for minimal flare and increased light transmission. The lens offers 9-76° viewing angle, 6.2ft close focusing distance and 77mm filter thread.