The Tamron 18-200mm uses the most modern optical and mechanical design to achieve compactness and high performance. Tamron has made full use of its long experience and expertise as a pioneering force in high-power zoom lenses to create an optimal all-in-one™ lens that opens up new photographic possibilities to all DSLR camera users.
The 1.4 EX is placed between the lens and the camera, and allows the photographer to use the 70-200mm f/2.8 lens as a 98-280mm f/4 lens, and the 300mm f/2.8 lens as a 420mm f/4 lens; the high optical performance is maintained and the AF speed is not affected.
This lens is a great lens that can fit the older Minolta range or the newer Sony Alpha range with the Minolta mount. This lens comes with the official Thread Cap, Lens Hood, and a Hoya UV Filter. (The lens hood is Minolta but may be for a different lens, however still included free of charge).
The lens incorporates a Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens.
This lens will fit all Sony Alpha DSLR cameras that have an angled mirror behind the lens. It will NOT fit mirrorless Sony Alpha cameras that use the smaller ‘E’ mount (these cameras do not have an angled mirror).