The Tamron 17-70mm f/2.8 Di III-A VC RXD is a fast, versatile standard zoom for APS-C mirrorless systems that combines a constant f/2.8 aperture with effective optical image stabilization. Covering a wide 17–70mm range (approx. 25.5–105mm equivalent on full‑frame), it suits action, travel and everyday shooting while delivering attractive background separation thanks to its bright aperture. Optical construction includes 16 elements in 12 groups with specialized LD and aspherical elements plus BBAR coatings to minimise flare and chromatic aberration; lab and real‑world tests show generally pleasing image quality across the zoom range. The RXD stepping motor and Tamron's VC stabilisation keep autofocus quick and steady for both stills and video, while the lens's weather‑resistant build and fluorine front coating increase reliability in adverse conditions. Compact for its class and weighing about 525g, it offers close focusing to 0.19m and a useful 0.21x magnification for near‑subject work. The lens's combination of constant speed, stabilisation and solid handling makes it a top choice for photographers who need a single, high‑quality walkaround lens for varied shooting scenarios from landscape to portraits and run‑and‑gun video work.
Mount | F |
Format | APS-C |
Weight (g) | 525 |
lens groups | 12 |
lens elements | 16 |
Diaphragm blades | 9 |
Filter thread (mm) | 67 |
Maximum aperture | f/2.8 |
Minimum aperture | f/16 |
Max focal length (mm) | 70 |
Min focal length (mm) | 17 |
Image stabilization | Yes |
maximum magnification | 0.21x |
Min focus distance (m) | 0.19 |