Tamron 17-70mm f/2.8 Di III-A VC RXD Fujifilm X Bundle camera lens

Versatile APS-C zoom lens

The Tamron 17-70mm f/2.8 Di III-A VC RXD is a constant-aperture standard zoom built for Fujifilm X-mount APS-C mirrorless cameras. It covers a 17-70mm focal range, equivalent to 25.5-105mm on full-frame, with a 4.1x zoom ratio. The optical design uses 16 elements in 12 groups, including two GM aspherical and one hybrid aspherical element. A quiet RXD stepping motor drives autofocus, while built-in Vibration Compensation helps stabilise both stills and video.

For hybrid shooters wanting one lens

This bundle suits photographers and videographers who need a single fast-aperture zoom for wide-angle to short-telephoto work on Fujifilm X bodies. The constant f/2.8 aperture and minimal focus breathing support consistent exposure during video recording. Buyers who need a wider maximum aperture than f/2.8 for very low-light primes should look at something else. Those requiring focal lengths beyond 70mm or wider than 17mm will need additional lenses.

Constant f/2.8 across 17-70mm

The defining specification is the constant f/2.8 maximum aperture maintained throughout the entire 17-70mm zoom range. This 4.1x ratio is claimed as a first for APS-C mirrorless cameras. It allows consistent exposure and depth-of-field control while zooming, which is critical for run-and-gun video and changing light conditions. If your workflow demands a fixed aperture across this specific range, this lens meets that requirement.