Tamron 28-200mm f/2.8-5.6 Di III RXD Lens (Sony E)

The Tamron 28-200mm f/2.8-5.6 Di III RXD Lens (Sony E) is a wide-to-super-telephoto all-in-one zoom for full-frame Sony E-mount mirrorless cameras, distinguished as the first all-in-one zoom lens to offer a bright f/2.8 maximum aperture at the wide end. Combining a 7x zoom range with a sleek, portable design, it’s well suited to travel, environmental portraits, and everyday shooting where swapping lenses isn’t practical.

Optically, the lens covers a 28-200mm focal range with a variable maximum aperture of f/2.8 at the wide end narrowing to f/5.6 at full telephoto, down to a minimum of f/16-32, delivering a 75°23′-12°21′ angle of view on full-frame bodies. The 18-element, 14-group optical design incorporates GM (Glass Molded Aspherical), hybrid aspherical, LD (Low Dispersion), and XLD (Extra Low Dispersion) elements, maintaining high sharpness and clarity throughout the zoom range. A rounded 7-blade diaphragm contributes to the lens’s background rendering.

Autofocus is handled by Tamron’s RXD (Rapid eXtra-silent stepping Drive) stepping motor, delivering quick, near-silent focusing well suited to both stills and video, along with full-time manual focus override and compatibility with Sony’s Direct Manual Focus function. A standout feature is the lens’s close-focusing capability, with a minimum object distance of just 7.5 in. (0.19m) at the wide end, yielding a maximum magnification ratio of 1:3.1 (0.32x), extending to 31.5 in. (0.8m) and 1:3.8 (0.26x) at telephoto, giving photographers useful close-up flexibility across the zoom range.

Build quality includes moisture-resistant construction along with a fluorine coating on the front element to resist fingerprints and smudging, along with a zoom-lock switch to keep the lens retracted during transport. The lens measures approximately 2.91 x 4.6 in. (74 x 116.8mm) and weighs approximately 1.27 lb (575-575.5g), and accepts a 67mm filter thread, the same size shared across other Tamron mirrorless lenses. It ships with a flower-shaped (petal) hood and lens caps, and does not include optical image stabilization, relying instead on in-body stabilization on compatible Sony bodies.

As a full-frame E-mount lens, the Tamron 28-200mm f/2.8-5.6 Di III RXD delivers its full angle of view on Sony full-frame bodies while remaining compatible with Sony APS-C E-mount cameras at an effective 42-300mm equivalent focal range.

Key Features
– 28-200mm all-in-one zoom (7x) for Sony full-frame E-mount
– First all-in-one zoom with f/2.8 maximum aperture at the wide end
– 18 elements in 14 groups, including GM, hybrid aspherical, LD, and XLD elements
– RXD stepping motor autofocus with full-time manual focus override
– Compatible with Sony Direct Manual Focus
– Rounded 7-blade diaphragm
– Minimum object distance of 7.5 in. (wide) / 31.5 in. (tele)
– Maximum magnification ratio of 1:3.1 (wide) / 1:3.8 (tele)
– Moisture-resistant construction with fluorine-coated front element
– Zoom-lock switch
– 67mm filter thread
– No image stabilization (relies on in-body stabilization)
– Includes flower-shaped hood
– Approximate weight: 575-575.5g
– Compatible with Sony full-frame and APS-C E-mount cameras (42-300mm equivalent on APS-C)