Descripción
Constant f/2.8 Standard Zoom for FUJIFILM X
Overview
The Tamron 17-70mm f/2.8 Di III-A VC RXD is an APS-C standard zoom with a constant f/2.8 across a range no rival covers: 17-70mm is roughly 26-105mm equivalent, which is a wide angle, a standard and a short telephoto in one barrel, without the aperture dropping as you zoom.
Key features
The range
- 4.1x zoom at a constant f/2.8: from 17mm for interiors and landscape to 70mm for portraits, with no exposure change.
- 80°37' to 23°17' diagonal on the X mount.
- 0.19 m minimum object distance at the wide end, for close-up work without a second lens.
Stabilisation and focus
- VC stabilisation: Tamron's Vibration Compensation, which matters on X bodies without in-body stabilisation.
- RXD stepping motor: quiet and quick, designed so autofocus does not intrude on a video soundtrack.
Optics and build
- 16 elements in 12 groups.
- 9 rounded diaphragm blades, closing to f/22.
- Moisture-resistant construction with a fluorine coating on the front element.
- 67 mm filter thread, shared across the Tamron range.
Specifications
- Mount: FUJIFILM X (APS-C)
- Focal length: 17-70mm (approx. 26-105mm equivalent)
- Maximum aperture: f/2.8, constant
- Minimum aperture: f/22
- Angle of view: 80°37' - 23°17'
- Optical construction: 16 elements in 12 groups
- Minimum object distance: 0.19 m (wide) / 0.39 m (tele)
- Maximum magnification ratio: 1:4.8 (wide) / 1:5.2 (tele)
- Diaphragm blades: 9, circular
- Stabilisation: VC (Vibration Compensation)
- Autofocus: RXD stepping motor
- Filter size: 67 mm
- Length: 119.6 mm (FUJIFILM X mount)
- Weight: 530 g (FUJIFILM X mount)
What it is good for
- Events and weddings: one lens from the room to the portrait, at f/2.8 throughout.
- Video: constant aperture, stabilisation and a quiet motor.
- Travel: the range that replaces two or three lenses.

