Canon RF100- vs Tamron 25-
Updated July 2026 — Canon RF100- wins on zoom range and stability, Tamron 25- wins on versatility and aperture.
The Canon RF100-400mm offers superior telephoto capabilities at a lower price, while the Tamron 25-200mm provides versatility and a faster aperture.
Why Canon RF100- is better
Price
Canon is $200 cheaper
Zoom Range
Canon offers a longer zoom range of 100-400mm
Stabilization
Canon has superior image stabilization features
Why Tamron 25- is better
Aperture
Tamron has a faster maximum aperture of F2.8
Versatility
Tamron is an all-in-one zoom lens
Close-up
Tamron offers better close-up performance with 1:1.9 magnification
Overall score
Specifications
| Spec | Canon RF100- | Tamron 25- |
|---|---|---|
| Focal Length | 100-400mm | 25-200mm |
| Max Aperture | F5.6-8 | F2.8-5.6 |
| Image Stabilization | Yes | No |
| Autofocus | Nano USM | VXD |
| Close-up Ratio | 0.41x | 1:1.9 |
Dimension comparison
Overview of the Canon RF100-400mm F5.6-8 IS USM
The Canon RF100-400mm F5.6-8 IS USM offers a versatile zoom range and is priced at $699.00. This telephoto lens is designed for Canon’s EOS R series cameras, making it ideal for wildlife and sports photography. With a compact and lightweight design, it provides high-image quality and notable features like an Optical Image Stabilizer with up to 5.5 stops of shake correction, which enhances stability when shooting at longer focal lengths. This lens also allows for quick adjustments with its control ring, emphasizing user convenience.
Overview of the Tamron 25-200mm F/2.8-5.6 Di III VXD G2
The Tamron 25-200mm F/2.8-5.6 Di III VXD G2 is priced at $899.00 and is tailored for Sony E-mount cameras. This all-in-one zoom lens features a fast F2.8 aperture at the wide end, enhancing its capabilities in low-light conditions while providing a flexible range for various photography styles. With advanced VXD autofocus technology, it excels in capturing fast-moving subjects, making it suitable for action photography. Additionally, its close-up performance allows for half-macro shooting, appealing to photographers who enjoy capturing detailed subjects.
Price Comparison
The Canon RF100-400mm is about 22% cheaper than the Tamron 25-200mm, making it a more budget-friendly option at $699.00 versus $899.00. This price difference may be significant for casual photographers or those just starting, as it allows for more financial flexibility. However, the price of each lens is reflective of their unique features and intended usage, with the Tamron offering a wider aperture and more versatility in framing.
Image Quality and Performance
In terms of image quality, the Canon RF100-400mm boasts a single Ultra Low Dispersion lens element to correct chromatic aberration, ensuring crisp and colorful images. With its long zoom range of 100-400mm, it is particularly suited for capturing distant subjects such as wildlife or sports. On the other hand, the Tamron 25-200mm focuses on versatility, delivering excellent sharpness across its zoom range and offering a maximum magnification ratio of 1:1.9 for detailed half-macro shots. Thus, while both lenses excel in image quality, the Canon is more specialized for long-range photography, while the Tamron provides a broader range of photographic possibilities.
Autofocus Capabilities
The autofocus systems of both lenses cater to different photography needs. Canon's RF100-400mm features fast and quiet autofocus with its Nano USM technology, making it suitable for capturing quick moving subjects without disturbing the environment. In contrast, the Tamron 25-200mm utilizes VXD linear motor technology, which also delivers fast and precise autofocus, ideal for dynamic scenes and action shots. Both lenses ensure that users can capture sharp images quickly, but the choice may depend on whether the photographer leans toward wildlife or versatile everyday shooting.
Size and Portability
When considering size and portability, the Canon RF100-400mm is compact and lightweight, making it easy to carry for extended periods—an essential feature for outdoor photographers. The Tamron 25-200mm, while also compact, is designed as an all-in-one solution, allowing photographers to switch between wide-angle and telephoto without needing to change lenses. This versatility can be appealing for travel photographers who prefer to minimize gear while still covering a variety of shooting situations.
Use Cases
The Canon RF100-400mm excels in specific scenarios such as wildlife, sports, and travel photography, where the longer focal length allows for greater flexibility in capturing subjects from a distance. Its Optical Image Stabilizer enhances its functionality in dynamic settings. Conversely, the Tamron 25-200mm is designed to meet a broad range of photography needs, from everyday moments to artistic expressions, making it suitable for both beginners and experienced users. The choice between the two largely depends on the specific photographic pursuits of the user.
Which should you buy?
Choosing between the Canon RF100-400mm F5.6-8 IS USM and the Tamron 25-200mm F/2.8-5.6 Di III VXD G2 ultimately depends on your specific needs as a photographer. If you require a lightweight telephoto lens with excellent reach and stability for wildlife or sports photography, the Canon RF100-400mm, priced at $699.00, is a compelling choice. However, if you seek a versatile all-in-one zoom lens with a fast aperture for a wider range of scenarios, the Tamron 25-200mm, priced at $899.00, provides exceptional adaptability. Consider your photography style and budget when making your decision.

