
Tamron
Tamron AFB070S700 17-70mm f/2.8 Sony E APS-C Lens
★★★★★
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
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
What is the full-frame equivalent focal length of this lens?
On Sony APS-C cameras, the 17-70mm range provides a 25.5-105mm full-frame equivalent, covering wide-angle to medium telephoto.
Does the Tamron 17-70mm f/2.8 have image stabilization?
Yes, it features Tamron's Vibration Compensation (VC) system, which is optimized for both stills and video, leveraging AI technology for smoother video footage.
How close can this lens focus?
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.
Is this lens weather-sealed?
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.
What filter size does this lens use?
It uses a standard 67mm filter thread.