Tamron 70-300mm f/4.5-6.3 Di III RXD for Sony E Mount

Zoom into the world of telephoto

The Tamron 70-300mm f/4.5-6.3 Di III RXD - Sony E Mount is a telephoto zoom lens designed and created so photographers of all skill levels can enjoy high-quality images comfortably. Tamron’s new 70-300mm F4.5-6.3 covers a broad telephoto zoom range yet is the world's smallest size and lightest weight, coming in at 148mm (5.8 in) long with a maximum diameter of 77mm, and weighing just 545g (19.2 oz). With special emphasis on resolving power, Tamron has deployed special lens elements appropriately arranged to correct chromatic aberration, generally very strong in a telephoto lens, as well as other aberrations. Users can enjoy high-resolution images combined with stunning bokeh qualities that are achievable only with a telephoto lens. The lens also incorporates the RXD (Rapid eXtra-silent stepping Drive) stepping motor unit, a high-speed precision AF drive system that is remarkably quiet. 

High-resolution Telephoto Zoom Lens

To make the 300mm telephoto focal length more fun and accessible, Tamron focused intently on designing a telephoto zoom lens that’s both small and lightweight. Turning the conventional concept of a telephoto lens on its head, the 70-300mm F4.5-6.3 is only 148mm (5.8 in) in length with a maximum diameter of 77mm and a weight of just 545g (19.2 oz). This gives users the freedom to concentrate fully on shooting without worrying about lens size or weight. In addition to those wishing to pursue real telephoto shooting for the first time, the lens is also recommended for people who use cameras that have built-in image stabilization because they can leave the tripod at home. Of special significance, when paired with the APS-C sized E-mount Sony cameras, this zoom adds additional telephoto reach and still remains comfortable to handle. Users can enjoy shooting with even higher-power telephoto effects at a maximum equivalent focal length of approximately 450mm

Outstanding Optical Performance

The 70-300mm F4.5-6.3 zoom’s optical design was refined via thorough simulations utilizing the latest technologies. With a high priority on reduced size and weight, Tamron selected the aperture of F6.3 for the telephoto end to achieve a slim lens barrel and outstanding lightness. Taking the weight savings even further, we used a specially treated, high-strength aluminium-magnesium alloy, the first time Tamron has used this material in the mount components of a lens for full-frame mirrorless cameras. The new design maintains excellent strength while successfully reducing weight to around 68% of previous mounts. The lens is made up of 15 elements in 10 groups with an appropriate arrangement of LD (Low Dispersion) lens elements. Eliminating waste to an extreme degree, Tamron reduced weight while still achieving very high image quality in the 70-300mm F4.5-6.3.