The Vivitar 3558T telephoto 18 mm lens is capable of mounting to nearly any kind of camera currently on the market, which makes this Vivitar camera lens extremely versatile. Using its four multi-coated optical glass elements, this telephoto 18 mm lens is able to work with any kind of lighting conditions its user may encounter. Also, this Vivitar camera lens's high speed auto focus allows users to focus in on their intended subject rapidly. This is very beneficial when photographing skittish wildlife or rapidly changing sporting events. Measuring 2.8 x 2.8 x 2.5 inches and weighing 11 oz, this Vivitar 3558T lens is small enough to accompany photographers on any kind of expedition. As it's a telephoto lens, this Vivitar 3558T is able to capture distant images as if they were very close in sharp resolution. This allows the user to capture carefully cropped shots of scenic vistas and wildlife that is either too dangerous to approach or is too easily disturbed.