Nikon 55-200mm DX Lens for NIKON DSLR Cameras COMES WITH FRONT & REAR LENS CAPS EXCELLENT CONDITION Focal Length: 55 - 200mm, similar to an 85 - 300 mm lens on a 35 mm film camera. Elements: 13 elements in 9 groups. Two are of ED glass. This is a lot of elements for such an inexpensive lens, which suggests the optics will be far better than many people might expect. Marked focal lengths: 55, 70, 85, 105, 135 and 200 mm. Focus system: Silent wave motor internal to lens. Filter Thread: 52 mm. Thank goodness; this was the standard thread size Nikon has used for their manual focus lenses made ever since 1959. Most pro photographers have a stack of 52mm filters; I know I do. Size: 3.1" (79 mm) long by 2.7" (68 mm) around. Small! Weight: 9 oz. (255 g), very light! Aperture Range: f/4 - 22 at 55 mm; f/5.6 - 32 at 200 mm. Diaphragm: Nine blades, rounded at larger apertures. This is excellent! Close Focus: 3.1 feet (0.95 meters), which is excellent for a telephoto.