The Tamron A17 is a telephoto macro zoom lens that allows you to shoot stunning close-up photographs. With 13 elements in 9 groups lens construction, this Tamron lens reduces the aberrations in the images you capture. The 62 mm filter of this telephoto macro zoom lens offers protection from dust. The 9 diaphragm blades in this Tamron lens help you to control the amount of light that passes through the lens. With f/4 to f/5.6 maximum aperture, the Tamron A17 lens allows you to capture clear images even in low light conditions.