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Canon RF100mm F2.8 L Macro is USM Lens, Medium vs Tamron 70-

Updated July 2026 — Canon RF100mm F2.8 L Macro is USM Lens, Medium wins on build quality and weight, Tamron 70- wins on zoom range and max aperture.

The Canon RF100mm excels in macro photography with superior image quality, while the Tamron 70-300mm offers versatility at a lower price. Choose based on your specific needs.

Why Canon RF100mm F2.8 L Macro is USM Lens, Medium is better

Image Quality

Canon has a fixed f/2.8 aperture for better low-light performance.

Macro Capability

Canon offers a maximum magnification of 1.4x.

Autofocus Precision

Canon features fast and highly precise autofocus.

Why Tamron 70- is better

Price

Tamron is significantly cheaper at $399.

Weight

Tamron is lighter at 19.2 oz.

Versatility

Tamron covers a zoom range of 70-300mm.

Overall score

Canon RF100mm F2.8 L Macro is USM Lens, Medium
88
Tamron 70-
75

Specifications

SpecCanon RF100mm F2.8 L Macro is USM Lens, MediumTamron 70-
Focal Length100mm70-300mm
Aperturef/2.8f/4.5-6.3
Image StabilizationYesNo
Autofocus TypeUSMRXD
Warranty1 Year6 Years

Dimension comparison

Canon RF100mm F2.8 L Macro is USM Lens, MediumTamron 70-

Overview of the Canon RF100mm F2.8 L Macro and Tamron 70-300mm

The Canon RF100mm F2.8 L Macro and the Tamron 70-300mm F/4.5-6.3 are two exceptional lenses designed for different photography needs. Priced at $1,248.95, the Canon lens offers macro capabilities with a maximum magnification of 1.4x, while the Tamron lens, priced at $399.00, provides versatility with its zoom range. Understanding their differences helps photographers choose the right tool for their creative vision.

Image Quality Comparison

Image quality is paramount in lens performance, and both the Canon RF100mm and the Tamron 70-300mm deliver impressive results. The Canon lens features a bright fixed f/2.8 aperture, ensuring high image quality and effective low-light performance. In contrast, the Tamron lens, while offering a variable aperture of f/4.5-6.3, employs 15 elements in 10 groups to minimize chromatic aberration. This configuration allows the Tamron to produce sharp images across its zoom range but may not achieve the same background blurring as the Canon's dedicated macro capabilities.

Focal Length and Versatility

When it comes to focal length, the Canon RF100mm is a medium telephoto lens specializing in macro photography, providing stunning close-up shots. It excels with a fixed focal length of 100mm, making it ideal for capturing intricate details. On the other hand, the Tamron 70-300mm offers a versatile zoom range from 70mm to 300mm, which is equivalent to 105mm to 450mm on APS-C cameras. This adaptability makes the Tamron well-suited for various photography styles, including landscapes, sports, and wildlife, offering greater flexibility for general photography.

Build Quality and Portability

Build quality and portability are essential considerations for photographers. The Canon RF100mm lens is engineered specifically for full-frame EOS R series cameras, showcasing robust construction with advanced optical features. However, it is heavier and bulkier at 1248.95. In contrast, the Tamron lens stands out for its supreme lightweight portability, weighing only 19.2 oz and measuring 5.8 inches in length. This makes the Tamron 70-300mm a more convenient option for outdoor shooting and travel, where carrying lighter gear is advantageous.

Autofocus Performance

The autofocus performance of both lenses is impressive, but they cater to different needs. The Canon RF100mm features fast and highly precise autofocus, making it ideal for macro photography where accuracy is critical. Additionally, it incorporates Hybrid IS, stabilizing camera shake during close-up and video shooting. Conversely, the Tamron's RXD (Rapid eXtra-silent stepping Drive) offers a quiet and efficient autofocus system, which is beneficial for capturing candid moments in wildlife or sports photography. Each lens provides a unique advantage in autofocus performance depending on the situation.

Price and Value

Price plays a significant role in the decision-making process. The Canon RF100mm is priced at $1,248.95, making it a more significant investment for photographers focused on macro work and high-quality portraiture. In contrast, the Tamron 70-300mm is considerably cheaper at $399.00, which is about 68% less than the Canon. This price difference makes the Tamron an excellent value for those looking for a versatile lens without breaking the bank, especially for amateur photographers or those just starting in telephoto photography.

Ideal Use Cases

Each lens caters to specific photography needs. The Canon RF100mm is perfect for professionals and enthusiasts seeking to capture fine details in macro photography, such as flowers, insects, or intricate portrait shots. Its advanced features and optical quality are designed for specialized tasks. On the other hand, the Tamron 70-300mm is geared towards photographers who require a multi-purpose lens that can handle a variety of subjects, making it suitable for everything from landscapes to sports photography. This versatility makes it an attractive option for those who want a single lens to address multiple scenarios.

Which should you buy?

Choosing between the Canon RF100mm F2.8 L Macro and the Tamron 70-300mm F/4.5-6.3 ultimately depends on your photography style and requirements. If you're primarily focused on macro photography or portraiture and desire the best image quality, the Canon lens justifies its higher price with exceptional features. However, if you seek versatility and a lighter weight for a broader range of photography, the Tamron lens offers incredible value at a significantly lower price point.