Tamron has released a new version of its 17-70mm F/2.8 lens designed for APS-C mirrorless cameras, now available for both Canon RF and Nikon Z mounts. The lens offers a fast constant aperture of F/2.8 across its zoom range, providing consistent low-light performance and shallow depth of field for video and stills creators.

On Canon RF APS-C cameras, the lens delivers an equivalent focal length of 27.2-112mm, while on Nikon Z APS-C bodies, it provides a 25.5-105mm equivalent range. This positioning makes it well-suited for everyday shooting, vlogging, and hybrid content creation where versatility and speed are valued.

The launch expands Tamron’s support for Canon’s growing RF APS-C ecosystem, which includes cameras like the EOS R7 and EOS R10. By offering a fast-aperture zoom in this mount, Tamron addresses creator demand for compact, high-performance optics that balance portability with professional capabilities.

For Nikon Z APS-C users, the lens complements existing DX-format options, adding a bright standard zoom choice to the lineup. The consistent F/2.8 aperture helps maintain exposure stability when zooming during video recording, a feature valued by solo creators and small production teams.

Tamron’s move reflects a broader trend of third-party lens makers strengthening support for APS-C mirrorless systems as adoption grows among content creators. The 17-70mm F/2.8 joins a growing selection of lenses aimed at users who want flexibility without sacrificing optical speed or build quality.

This release follows Tamron’s strategy of expanding its mirrorless lens lineup across multiple mounts, focusing on practical focal lengths and apertures that meet the real-world needs of hybrid shooters. No further technical specifications or pricing details were included in the announcement.