Today we will look on Tamron AF 18-200mm А/3.5-6.3 XR Di II LD Aspherical [IF] MACRO. As it is seen from its name, it has varying 18 – 200 mm focus distance and varying maximal aperture f/3.5-6.3, depending on zoom settings; its minimal aperture is f/22; it is controlled with use of 7 diaphragm blades. Lens has macro function and its minimal focusing distance is 0.45 m; field of view is 75 – 8 degrees, depending on zoom settings. Objective lens has 15 lens elements in 13 groups, among them there are : 3 aspherical lens elements, 2 are produced from LD glass with low dispersion level. All lens elements, except LD, are produced from XR ( Extra Refractive Index ) glass; all lens are coated with protective and anti-reflective multicoating. There is ability to attach 62 mm optical filters to Tamron AF 18-200mm А/3.5-6.3 XR Di II LD Aspherical [IF] MACRO; its sizes are : 73.8 x 83.7 mm, and weight is : 405 g. It is produced only in black color variant. All in all : this is a good objective lens, which costs optimal amount of money ( in comparison with other similar lenses ) 149 USD at the middle of Autumn 2015. Wherein : there is ability to buy more affordable lenses for M42x1 mounts and use them with converters and adapters; or there is ability to buy macro lens, which can be attached to existing objective lens.