The optical construction of the 17-70mm F2.8 features 16 elements in 12 groups. It is the first F2.8 fast-aperture zoom lens in the world for APS-C mirrorless cameras to achieve a 4.1x zoom ratio. The Model B070 has a focal length range of 17-70mm, equivalent to 25.5-105mm on full-frame cameras. World’s first fast-aperture standard zoom lens for APS-C mirrorless cameras with the focal length range of 17-70mm (4.1x zoom ratio) It is a highly useful lens that delivers high image quality for photography and videography with its fast F2.8 aperture.
Its 67mm filter size is the same as most TAMRON lenses for mirrorless cameras. For added versatility, the 17-70mm F2.8 offers an exceptional MOD (Minimum Object Distance) of 7.5” at the wide-angle end, Moisture-Resistant Construction and Fluorine Coating. These features enable videographers to shoot comfortably when using a mirrorless interchangeable-lens camera. It is also equipped with the quiet RXD (Rapid eXtra-silent stepping Drive) AF motor and has minimal focus breathing. The VC mechanism leverages AI technology when shooting video. It is a small, lightweight lens equipped with Tamron’s VC (Vibration Compensation) mechanism to minimize camera shake. It features a maximum aperture of F2.8 across the entire 4.1x zoom ratio that covers the focal length range of 17-70mm (full-frame equivalent of 25.5-105mm), and superb optical performance.
This new lens is the FUJIFILM X-Mount version of the 17-70mm F/2.8 Di III-A VC RXD (Model B070) released in January 2021 for Sony E-mount APS-C mirrorless cameras. However, due to the current global health crisis, the release date or product supply schedule could change. The lens is scheduled to be on sale on July 8, 2022, at $799. June 15, 2022, Commack, NY - Tamron announces the launch of the 17-70mm F/2.8 Di III-A VC RXD (Model B070), a fast-aperture standard zoom lens for FUJIFILM X-mount APS-C mirrorless cameras. Press release: TAMRON Announces the Launch of the World’s First 1 Wide Range 4.1x Standard Zoom Lens for FUJIFILM X-mountġ7-70mm F/2.8 Di III-A VC RXD (Model B070) However, Tamron does note that 'due to the current global health crisis, the release date or product supply schedule could change. Tamron’s 17–70mm F2.8 Di III-A VC RXD is expected to go on sale starting Jfor $799. The lens is also ‘moisture-resistant’ and has a fluorine coating on the front element to keep dirt and debris at bay as much as possible. Other features include a nine-blade circular aperture diaphragm, a 67mm front filter thread size and an aperture range of F2.8 through F22. Autofocus is riven via Tamron’s RXD stepping motor mechanism. The lens is optically stabilized with Tamron’s proprietary VC mechanism that works alongside a dedicated Micro Processor Unit (MPU) to compensate for movement in stills and video shooting. It features a minimum focusing distance of 19cm (7.5") at the wide end and 39cm (15.4") at the tele end.
The lens offers a 25.5–105mm full-frame equivalent field-of-view and is constructed of 16 elements in 12 groups, including two Glass Molded Aspherical (GM) elements and one hybrid aspherical element. Tamron has announced the launch of the 17–70mm F2.8 Di III-A VC RXD, a standard zoom lens for Fujifilm X-mount camera systems based on the same lens announced for Sony E-mount camera systems back in January 2021.
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