Product Highlights

The 28-75mm f/2.8 Di III RDX from Tamron is a full-frame-compatible lens for Sony E-mount mirrorless cameras. Spanning wide-angle to portrait-length, a constant f/2.8 maximum aperture complements this range and affords increased control over depth of field along with enhanced low-light performance. Benefitting the optical design is an RDX stepping motor, which enables quick, near-silent autofocus performance to suit stills and video, along with full-time manual focus override and a minimum focusing distance of 7.5″. Suiting this lens’s use in harsh climates, it also sports a moisture-resistant construction along with a fluorine-coated front element to protect against fingerprints and smudging. One XLD (eXtra Low Dispersion) element and one LD (Low Dispersion) element greatly reduce color fringing and chromatic aberrations throughout the zoom range to realize improved clarity and color accuracy. RDX (Rapid eXtra-silent stepping Drive) autofocus motor delivers impressively quiet, quick, and smooth focusing performance to suit both stills and video applications. This focusing system also offers a minimum focusing distance of just 7.5″ and a 1:2.9 maximum magnification for working with close-up subjects. Full-time manual focus override is also possible and it is compatible with Sony’s Direct Manual Focus function or fine-tuned manual control.