Introducing a new a standard zoom lens for Sony E-mount APS-C mirrorless cameras: Tamron 17-70mm F/2.8 Di III-A VC RXD (Model B070). It features a maximum aperture of F/2.8 across the entire 4.1x zoom ratio that covers a focal length of 17-70mm that is ideal for regular use (a full-frame equivalent of 25.5-105mm) and superb optical performance. It is a small, lightweight lens that is also equipped with Tamron's VC, Vibration Compensation, mechanism to minimize camera shake. This VC mechanism also leverages AI technology when shooting video.
Expand your photo experiences with an advanced standard zoom lens
The world's first1 17-70mm F/2.8, large aperture standard zoom lens for APS-C mirrorless cameras. Even with VC and a focal length expanding to 70mm, this lens has outstanding optical performance compared to its competitors. The optical construction of the new 17-70mm F/2.8 Di III-A VC RXD features 16 elements in 12 groups. Two GM (Glass Moulded Aspherical) lens elements and one hybrid aspherical lens element are precisely arranged to maintain high-resolution performance from edge to edge. In-camera lens correction (shading, chromatic aberration, distortion) are available too.
Upgraded VC with a dual MPU
The new 17-70mm F/2.8 Di III-A VC RXD features a control system that uses a Dual MPU (Micro-Processing Unit) process. In addition to an MPU with built-in DSP (Digital Signal Processor) blocks for superior signal processing, Tamron has added an MPU dedicated solely to vibration compensation. The result is quicker, more precise AF performance and more consistently powerful VC (Vibration Compensation). The VC is also especially optimized for video shooting.
High quality images and perfect handling
The 17-70mm F/2.8 Di III-A RXD utilizes Tamron's highly regarded, proprietary VC image stabilization to maximize the inherent optical performance of the lens. It reduces the degradation of picture quality caused by minute camera shake that is likely to occur during handheld shooting at slow shutter speeds under low-light conditions indoors or at dusk. When shooting video, by leveraging AI technology, image stabilization performance improves compared to conventional models. The 17-70mm F/2.8 has a focal length range of 17-70mm, equivalent to 25.5-105mm on full-frame cameras (4.1x zoom ratio).
Superior AF keeps it sharp and still
The AF drive incorporates a sensor that accurately detects the position of the lens while the RXD motor unit delivers optimized AF control. This achieves very fast and accurate autofocus operation and allows users to maintain tack-sharp focus on continuously moving subjects shot at the standard zoom position. Thanks to the exceedingly quiet AF, the lens can be used discreetly in concert halls and other situations that require low noise levels, and obviously for video recording.
VC for video shooting
By leveraging AI technology, image stabilization performance improves compared to conventional models when shooting video. The lens automatically switches to a video-tailored VC mode only when shooting video. This VC mode compensates for vibration that occurs during handheld still shooting, and that is caused by motion such as panning and tilting, without the unnatural behaviour seen with previous VC technology. It does not, however, completely eliminate shaking when shooting while running, walking or going up or downstairs, as is possible with a gimbal.
Compatible with camera-specific features and functions
Tamron’s new 17-70mm F/2.8 Di III-A VC RXD is compatible with many of the advanced features that are specific to certain mirrorless cameras. These include the following:
Fast Hybrid AF
Direct Manual Focus (DMF)
In-camera lens correction (shading, chromatic aberration, distortion)
Camera-based lens unit firmware updates
Moisture-Resistant Construction for added protection
Seals are located at the lens mount area and other critical locations to deter infiltration of moisture and/or rain drops and afford Moisture-Resistant Construction. This feature provides an additional layer of protection when shooting outdoors under adverse weather conditions.