Tamron's recent expansion of its 17-70mm F/2.8 lens to Canon RF and Nikon Z APS-C mirrorless cameras is a significant move, offering photographers a versatile and fast zoom option. This development, nearly five years after the lens's debut on Sony E mount, highlights the ongoing evolution of lens technology and the growing demand for high-quality, fast zoom lenses for APS-C cameras.
A Versatile Zoom for APS-C Photographers
The lens provides a wide range of focal lengths, from wide-angle to short telephoto, making it an ideal companion for various photography genres. On Nikon DX cameras, it offers a full-frame equivalent of 25.5-105mm, while Canon APS-C users get a slightly longer range of approximately 27.2-112mm. This versatility is particularly appealing for travel, street, and landscape photography, where adaptability is key.
Canon RF Users Rejoice
For Canon APS-C shooters, this lens is a game-changer. Canon currently lacks a native APS-C standard zoom with a constant F/2.8 aperture, so the Tamron 17-70mm fills a significant gap in their lens lineup. Compared to Canon's RF-S standard zooms with variable apertures, and Sigma's 18-50mm F/2.8 with a shorter zoom range, the Tamron lens offers a unique combination of features that will appeal to many photographers.
Proven Optical Design and Performance
The Nikon Z and Canon RF versions of the lens maintain the same optical construction as the original Sony E model, ensuring consistent image quality. With 16 elements, including low-dispersion and aspherical elements, the lens delivers sharp images with reduced distortion throughout the zoom range. Tamron's BBAR G2 coating further enhances image quality by minimizing flare and ghosting, especially when shooting into bright light.
Fast and Quiet Autofocus
Tamron's Rapid eXtra-silent stepping Drive (RXD) autofocus system ensures fast, accurate, and quiet focusing, making it suitable for both still photography and video recording. The lens also suppresses focus breathing, a common issue in video work, allowing for smoother transitions between different focal lengths. Additionally, the close-focusing capability, down to 0.19m at the wide end, opens up creative possibilities for detailed close-up compositions.
Lightweight and Weather-Resistant Construction
The lens's durable polycarbonate exterior and moisture-resistant design make it suitable for a range of shooting conditions. The fluorine coating on the front element repels water, oil, and fingerprints, adding to its durability and ease of maintenance. The Nikon Z version weighs 540g and measures 121.3mm, while the Canon RF version is slightly lighter and shorter, at 530g and 117.3mm, making it a compact and portable option for photographers on the go.
Pricing and Availability
The Tamron 17-70mm F/2.8 Di III-A VC RXD for Nikon Z and Canon RF mounts is available now for $749, a competitive price point for such a versatile and high-performance lens. The original Sony E version remains an option at $599, currently discounted from its original price of $699.
Conclusion
Tamron's expansion of this lens to Canon RF and Nikon Z systems is a welcome development for APS-C photographers. With its fast aperture, versatile zoom range, and proven optical performance, it offers a compelling option for those seeking a do-it-all lens for their mirrorless cameras. The lens's lightweight design and weather resistance further enhance its appeal for travel and everyday shooting. As an enthusiast, I'm excited to see how this lens performs in the field and the creative possibilities it opens up for photographers.
