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Canon RF28- vs Tamron 70-

Updated July 2026 — Canon RF28- wins on weight and size, Tamron 70- wins on price and zoom range.

The Canon RF28-70mm F2.8 is STM excels in build quality and versatility, while the Tamron 70-180mm F/2.8 offers a broader zoom range and better autofocus. Choose based on your specific needs.

Why Canon RF28- is better

Build Quality

Professional-grade weather-resistant construction

Versatility

Compact design suitable for various shooting styles

Image Quality

Superior edge-to-edge clarity with UD elements

Why Tamron 70- is better

Price

More budget-friendly at $999.00

Zoom Range

Wider focal length range from 70mm to 180mm

Autofocus

High-speed VXD autofocus for tracking moving subjects

Overall score

Canon RF28-
88
Tamron 70-
82

Specifications

SpecCanon RF28-Tamron 70-
Aperturef/2.8f/2.8
Focal Length28-70mm70-180mm
Image StabilizationYesYes
Autofocus TypeSTMVXD
Weather ResistanceYesYes

Dimension comparison

Canon RF28-Tamron 70-

Overview of the Canon RF28-70mm F2.8 is STM

The Canon RF28-70mm F2.8 is STM is a versatile mid-range zoom lens that offers a fixed f/2.8 aperture throughout its entire zoom range. Priced at $1,098.95, this lens is designed for both still and video content creators, making it an excellent choice for those who need high-quality optics. Weighing just over one pound, it is lightweight and compact, making it easy to carry around. The lens features advanced image stabilization technology and an impressive construction that is weather-resistant, akin to Canon's L-series lenses, allowing for use in harsher environments.

Overview of the Tamron 70-180mm F/2.8 Di III VC VXD G2

The Tamron 70-180mm F/2.8 Di III VC VXD G2 is priced at $999.00, making it about 17% cheaper than the Canon RF28-70mm. This lens is specifically designed for Sony E-Mount full-frame mirrorless cameras. It incorporates Tamron’s proprietary VC Image Stabilization, which enhances shooting stability, particularly in dynamic situations. This lens also offers a versatile zoom range, going from 70mm to 180mm, allowing for more creative framing options. It features moisture-resistant construction and is designed for high-speed, high-precision autofocus, making it a robust option for photographers who require reliability and performance.

Image Quality Comparison

When it comes to image quality, both lenses provide exceptional performance. The Canon RF28-70mm boasts two UD elements and two aspheric lenses, which minimize chromatic aberration and ensure edge-to-edge clarity. This lens is particularly noted for its high image quality that rivals Canon's L-series. On the other hand, the Tamron 70-180mm has undergone an optical redesign, ensuring uncompromising image quality across its entire zoom range. Both lenses excel in capturing sharp, vibrant images, but the choice may depend on the specific focal lengths and shooting styles of the user.

Autofocus and Performance

The autofocus capabilities of both lenses are impressive but cater to different needs. The Canon RF28-70mm F2.8 is designed with a focus on versatility and ease of use, making it suitable for both stills and video. Meanwhile, the Tamron 70-180mm features a VXD (Voice-coil eXtreme-torque Drive) linear motor, which provides high-speed and high-precision autofocus, making it particularly effective for tracking moving subjects. For photographers focused on fast-paced environments, the Tamron may offer an edge in performance.

Build Quality and Durability

The build quality of the Canon RF28-70mm is on par with L-series lenses, featuring a weather-resistant construction that allows for reliable use in various conditions. Its lightweight design makes it an everyday carry lens without compromising durability. Conversely, the Tamron 70-180mm is also moisture-resistant and includes a fluorine coating for scratch resistance, adding to its longevity. Both lenses are designed to withstand the rigors of professional use, but the Canon may appeal more to those who prioritize a professional-grade feel and robustness.

Usability and Versatility

In terms of usability, the Canon RF28-70mm F2.8 is particularly versatile due to its zoom range, which is excellent for everyday shooting scenarios. Its compact design allows for easy handling, making it a go-to lens for photographers on the move. The Tamron 70-180mm, while slightly bulkier, provides a wider zoom range, making it ideal for landscape and portrait photography. The added functionality of the Tamron Lens Utility™ and Mobile™ apps allows users to customize lens settings, enhancing its versatility for different shooting styles.

Price Comparison

Pricing is a significant factor when comparing these two lenses. The Canon RF28-70mm is priced at $1,098.95, while the Tamron 70-180mm is available for $999.00. This translates to a difference of about $99, making the Tamron a more budget-friendly option for those looking for a high-quality lens without breaking the bank. If price is a crucial determinant for your purchase, the Tamron offers excellent value without sacrificing performance.

Which should you buy?

Ultimately, the choice between the Canon RF28-70mm F2.8 is STM and the Tamron 70-180mm F/2.8 Di III VC VXD G2 will depend on your specific needs and preferences. If you prioritize a compact design, professional-grade build quality, and versatility in shooting styles, the Canon may be the better option. However, if you are looking for a more affordable lens with a broader zoom range and advanced autofocus capabilities, the Tamron stands out as an excellent choice. Both lenses offer exceptional image quality and performance, making either a worthy addition to your camera gear.