Tamron 17-70mm F/2.8 Comes to Canon RF and Nikon Z APS-C

Tamron's 17-70mm F/2.8 Di III-A VC RXD is now available for Canon RF and Nikon Z APS-C mounts. Canon RF users get a 27.2-112mm equivalent; Nikon Z users get 25.5-105mm. Canon currently offers no native RF-S zoom with a constant F/2.8, making this the only option in that mount at that aperture for the full 17-70mm range. Same optical formula as the Sony E version: 16 elements, 12 groups, BBAR G2 coating, RXD stepping motor.