Canon RF 75- vs Tamron 18-
Updated July 2026 — Canon RF 75- wins on filter size, Tamron 18- wins on weight and zoom range.
The Canon RF 75-300mm offers a lightweight and budget-friendly option for telephoto photography, while the Tamron 18-300mm provides extensive versatility for various photography needs. Ultimately, the choice depends on your specific requirements.
Why Canon RF 75- is better
Price
Canon lens is significantly cheaper.
Weight
Canon lens is lighter and more portable.
Compact Design
Canon lens has a smaller filter thread.
Why Tamron 18- is better
Zoom Range
Tamron offers a wider focal range.
Close-up Capability
Tamron has a better maximum magnification.
Autofocus Speed
Tamron's VXD motor provides faster focusing.
Overall score
Specifications
| Spec | Canon RF 75- | Tamron 18- |
|---|---|---|
| Focal Length | 75-300mm | 18-300mm |
| Aperture | f/4-5.6 | f/3.5-6.3 |
| Max Magnification | 0.25x | 1:2 |
| Autofocus | DC Motor | VXD |
| Image Stabilization | No | Yes |
Dimension comparison
Overview of the Canon RF 75-300mm f/4-5.6 Lens
The Canon RF 75-300mm f/4-5.6 Lens is designed for Canon RF-mount mirrorless cameras and offers a versatile telephoto zoom range. Priced at $253.95, it provides a compact and lightweight option for photographers who need to capture distant subjects such as wildlife and sports. The lens is optimized for sharp images and features a variable aperture that balances performance with portability.
Overview of the Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD Zoom Lens
The Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD Zoom Lens is an all-in-one solution for Canon R APS-C mirrorless cameras, retailing for $599.00. This lens offers a remarkable 16.6x zoom range, allowing photographers to transition seamlessly from wide-angle to ultra-telephoto shots. It is tailored for versatility, making it suitable for landscapes, portraits, and wildlife photography while maintaining a compact design for travel convenience.
Image Quality and Performance
When it comes to image quality, the Canon RF 75-300mm excels with its optical design optimized for sharpness and clarity. Canon's Super Spectra Coating helps reduce lens flare and ghosting, which is crucial for shooting in challenging lighting conditions. Although the Tamron 18-300mm also aims for high-quality images, its wider aperture range could potentially offer better low-light performance. However, the maximum magnification of 1:2 in the Tamron lens stands out, enabling detailed close-ups that the Canon lens cannot match.
Versatility and Focal Range
The Canon RF 75-300mm lens offers a focal length of 75-300mm, which translates to a 120-480mm equivalent on APS-C cameras, making it ideal for distant subjects. On the other hand, the Tamron 18-300mm provides a broader focal range from 18mm to 300mm, making it more versatile for various photography types, including landscapes and portraits. This 16.6x zoom range enables photographers to adapt to different situations without the need to change lenses, a significant advantage for those who prefer an all-in-one solution.
Build Quality and Design
The Canon RF 75-300mm lens is lightweight, weighing just over 1 lb, which enhances its portability for everyday use. It features a compact design with a modest 58mm front filter thread, making it easy to carry around. In contrast, the Tamron lens, while still compact, is slightly bulkier due to its extensive zoom range. However, it includes additional features like an AF/MF switch and a Vibration Compensation (VC) system, which can be beneficial for ensuring stable shots in various conditions.
Autofocus Performance
The autofocus performance of both lenses is noteworthy, but they employ different technologies. The Canon RF 75-300mm uses a DC motor for responsive and accurate focusing, which is effective for both stills and video. The Tamron 18-300mm, equipped with a high-speed linear motor focus mechanism known as VXD, promises high precision and speed. This feature may give the Tamron lens an edge in fast-paced shooting scenarios, such as wildlife photography or sports events.
Price Comparison
The Canon RF 75-300mm is priced at $253.95, making it about 57% cheaper than the Tamron 18-300mm, which costs $599.00. This significant price difference may make the Canon lens more appealing for budget-conscious photographers who still desire quality and versatility. However, the Tamron lens justifies its higher price through its extensive zoom range and additional features, catering to those who value a comprehensive photography solution in a single lens.
Which should you buy?
Choosing between the Canon RF 75-300mm f/4-5.6 Lens and the Tamron 18-300mm F/3.5-6.3 Di III-A VC VXD Zoom Lens ultimately depends on your specific needs. If you prioritize a lightweight, budget-friendly option for telephoto photography, the Canon lens is an excellent choice. However, if you seek versatility and the ability to capture a wider range of subjects—from landscapes to close-ups—then the Tamron lens offers a comprehensive solution worth its higher price.

