Tamron

Tamron AFB070S700 17-70mm f/2.8 Sony E APS-C Lens

4.7 (1023 reviews)
f/2.8

Tamron's versatile 17-70mm f/2.8 zoom delivers constant bright aperture across a 4.1x range for Sony APS-C mirrorless shooters.

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Overview

The Tamron 17-70mm f/2.8 Di III-A VC RXD is a standout standard zoom designed specifically for Sony E-mount APS-C mirrorless cameras. It holds the distinction of being the world's first high-speed standard zoom for APS-C with a 4.1x zoom ratio while maintaining a constant f/2.8 maximum aperture throughout its range. The optical formula consists of 16 elements in 12 groups, incorporating two GM (Glass Molded Aspherical) lens elements and one hybrid aspherical element that work together to minimize aberrations and deliver sharp, high-contrast images from corner to corner. Its 25.5-105mm equivalent range on APS-C sensors makes it an exceptionally practical single-lens solution for travel, events, portraits, and everyday shooting.

Beyond its optical merits, this lens is built for real-world versatility. The upgraded Vibration Compensation system leverages AI technology to provide smoother stabilization during video recording, complementing Sony's in-body stabilization on compatible bodies. The remarkably short minimum focusing distance of 7.5 inches at the wide end allows photographers to capture tight detail shots without switching to a dedicated macro lens. Moisture-resistant construction and a fluorine-coated front element ensure the lens can handle challenging conditions, while the RXD (Rapid eXtra-silent stepping Drive) autofocus motor delivers fast, quiet focusing well-suited for both stills and video applications.

Key Features

World’s first high-speed standard zoom lens for APS-C cameras with the focal length range of 17-70mm 4.1x zoom ratio

Outstanding optical performance with 16 elements in 12 groups featuring two GM (Glass Molded Aspherical) lens -elements and one hybrid aspherical lens element

Upgraded VC effective in combination with Sony APS-C mirrorless cameras, leveraging AI for video shooting

Close focusing capability with MOD of just 7.5” at 17mm / 15.4" at 70mm

Moisture-Resistant Construction and Fluorine Coating

Specifications

Focal Length
17-70mm (25.5-105mm full-frame equivalent)
Maximum Aperture
f/2.8 (constant)
Optical Design
16 elements in 12 groups
Special Elements
2 GM aspherical, 1 hybrid aspherical
Image Stabilization
VC (Vibration Compensation) with AI optimization
Minimum Focus Distance
7.5" at 17mm / 15.4" at 70mm
Filter Size
67mm
Mount
Sony E (APS-C)
Weather Resistance
Moisture-resistant construction, fluorine coating
Model Number
AFB070S700

Pros & Cons

👍 Pros

  • Constant f/2.8 aperture across the entire 17-70mm zoom range is rare for an APS-C lens
  • Versatile 4.1x zoom ratio covers wide-angle to portrait-length telephoto in a single lens
  • Impressive close-focusing distance of just 7.5 inches at the wide end for near-macro shots
  • Built-in Vibration Compensation with AI-enhanced stabilization benefits handheld video work
  • Moisture-resistant build with fluorine coating adds durability for outdoor shooting

👎 Cons

  • Designed exclusively for APS-C Sony E-mount bodies, so it cannot be used on full-frame cameras without significant crop
  • Heavier and larger than typical APS-C kit zooms, which may affect balance on smaller camera bodies
  • The 67mm filter size is larger than many competing APS-C zooms, adding cost if purchasing filters
  • No internal zoom mechanism means the barrel extends physically at longer focal lengths

Frequently Asked Questions

On Sony APS-C cameras, the 17-70mm range provides a 25.5-105mm full-frame equivalent, covering wide-angle to medium telephoto.
Yes, it features Tamron's Vibration Compensation (VC) system, which is optimized for both stills and video, leveraging AI technology for smoother video footage.
The minimum focusing distance is 7.5 inches (19cm) at the 17mm wide end and 15.4 inches (39cm) at the 70mm telephoto end, making it capable of close-up detail shots.
It features moisture-resistant construction and a fluorine coating on the front element to repel water, dust, and fingerprints, though it is not fully weather-sealed.
It uses a standard 67mm filter thread.