17-70mm f/2.8 Di III-A VC RXD - Fujifilm X Fit

The Tamron 17-70mm f/2.8 Di III-A VC RXD is a constant-aperture zoom lens designed for FUJIFILM X-mount APS-C mirrorless cameras, offering a 25.5-105mm equivalent focal length that spans from wide-angle to short-telephoto fields of view. The bright f/2.8 maximum aperture remains consistent throughout the zoom range, enabling improved depth of field control and reliable performance in low-light conditions. Optical refinements include three aspherical elements and two low-dispersion elements that work together to minimize distortion, chromatic aberration, and color fringing while delivering sharp, accurate imagery across the zoom range.

The lens features Tamron's VC vibration compensation image stabilization system for steadier handheld shooting in challenging lighting, paired with a fast RXD stepping motor that delivers quiet and responsive autofocus performance suitable for both photography and video work. A nine-blade rounded diaphragm produces pleasing bokeh, while BBAR anti-reflection coatings reduce flare and ghosting for enhanced contrast in bright conditions. The lens also incorporates moisture-resistant construction and a fluorine-coated front element for durability in inclement weather, with a minimum focusing distance of 7.5 inches.