The Tamron 70-300mm f/4-5.6 Di LD Macro Autofocus Lens is a compact, light-weight, ultra-tele zoom which covers the 70mm to 300mm telephoto range and produces photographs of exceptional image quality. It is ideal for taking pictures at a distance particularly when the subject is difficult to approach such as in nature and wildlife photography as well as at sporting and theatrical events. The Tamron 70-300mm also excels at portraiture and allows you to isolate the subject from the background for eye-catching, dramatic portraits. This versatile zoom has superb macro capability with a magnification of 1:2 enabling 1/2 life-size close-up shots of flowers, insects, and other objects that normally would require the use of a specially designed macro lens. This new lens is made with the Tamron Di (Digitally Integrated) design which uses an optical system with improved multi-coatings designed to function with Digital SLR Cameras as well as Film SLR Cameras. Tamron also incorporates LD (Low Dispersion) glass in this lens to correct chromatic aberration, resulting in clear, sharp, and beautifully vivid images.
From the Manufacturer
Designed for optimum handling ease and portability (it weighs only 458g <16.2oz.> ), it’s ideal for handheld shooting with full-frame and APS-C format SLRs. Its unsurpassed close-focusing ability (down to 0.95m (3.1 feet ) or 1:2 in macro mode) makes it perfect for nature and portrait photography.
AF 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens Features Low Dispersion (LD) Glass for Greater Lens Sharpness
|Zoom in to 300mm from a distance |
Low dispersion (LD) glass elements in a lens help reduce chromatic aberration; the tendency of light of different colors to come to different points of focus at the image plane. Chromatic aberration reduces the sharpness of an image, but glass with an extremely low dispersion index, has less of a tendency to separate (defract) a ray of light into a rainbow of colors. This characteristic allows the lens designer to effectively compensate for chromatic aberration at the center of the field (on axis), a particular problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (towards the edges of the field) that often occurs at short focal lengths (the wide-angle end of the zoom range.)"