The Tamron A19-100, part of Tamron’s SP series of zoom lenses, is a solidly constructed lens best suited for general, macro, and nature photography. The accurate colour rendering of the Tamron A19-100 complements its tele-macro capability, which magnifies subjects to a maximum ratio of 1:2.6. As a digital SLR lens, compatibility with a variety of cameras is critical, and the Tamron zoom lens delivers with the Adaptall II interchangeable mounting system. This system allows the lens to fit most manual focus cameras without the hassle of making precise adjustments. Despite its extensive zoom length of 70 millimetres to 210 millimetres, this Tamron zoom lens is a compact 79 millimetres long. Utilising a push-pull zooming mechanism, this digital SLR lens is not only easy to use, but also quick in the field. The aperture is specifically engineered for fast response times, and the full aperture range of the Tamron A19-100 is very generous, ranging from f/3.5 all the way down to f/32.