Tamron 28-200mm f/2.8-5.6 Di III RXD Lens (A071, Sony E)

The Tamron 28‑200mm f/2.8‑5.6 Di III RXD (Model A071) is an innovative all‑in‑one zoom lens designed exclusively for Sony E‑mount full‑frame mirrorless cameras. It combines a versatile wide‑to‑tele zoom range with one of the fastest maximum apertures in its class, offering outstanding optical performance, close‑range capability, and smooth autofocus in a compact and lightweight design.

Exceptional Zoom Range and Aperture

This lens covers a broad 28–200mm focal length range, making it suitable for diverse shooting scenarios from wide landscapes and street photography to portraits and distant subjects. At the wide end, it boasts a bright f/2.8 maximum aperture, unique among all‑in‑one zooms covering this range, which gives greater flexibility in low light and stronger depth‑of‑field control compared to typical zoom lenses.

Optical Performance and Quality

The optical design incorporates 18 elements in 14 groups, including several special low‑dispersion elements such as XLD (eXtra Low Dispersion) and LD (Low Dispersion) glass that help suppress chromatic aberrations and deliver sharp, high‑contrast images throughout the zoom range. BBAR (Broad‑Band Anti‑Reflection) Coating further minimizes flare and ghosting in challenging lighting conditions.

Autofocus and Handling

Autofocus is powered by Tamron’s RXD (Rapid eXtra‑silent stepping Drive) motor, providing fast, quiet, and precise focusing — especially useful for moving subjects and video recording. The lens also supports full‑time manual focus override for precise control.

Close‑Up Capability

With a minimum focusing distance of 0.19 m (7.5 in) at the wide end and 0.8 m (31.5 in) at the telephoto end, this lens delivers respectable close‑up performance for a zoom lens of this type. The maximum magnification ratios — 1:3.1 at 28 mm and 1:3.8 at 200 mm — allow creative close‑up shots with pleasing background compression.

Design and Build

The A071 is thoughtfully engineered for mirrorless systems, combining strong optical performance with a compact form. Measuring approximately 117 mm in length and weighing about 575 g, it offers excellent portability for travel and everyday use. The standard 67 mm filter thread is shared with many other Tamron mirrorless lenses, allowing filter interchangeability. Moisture‑resistant construction and a fluorine‑coated front element enhance durability and ease of maintenance outdoors.

Key Specifications

• Mount: Sony E (Full‑frame compatible)
• Model: A071
• Focal Length: 28–200 mm
• Maximum Aperture: f/2.8‑5.6
• Minimum Aperture: f/16‑32
• Angle of View: 75°23′–12°21′
• Optical Construction: 18 elements in 14 groups
• Minimum Focus Distance: 0.19 m / 0.8 m
• Maximum Magnification Ratio: 1:3.1 / 1:3.8
• Filter Size: 67 mm
• Aperture Blades: 7 (circular)
• Length: Approx. 117 mm
• Weight: Approx. 575 g