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Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens vs Tamron 28-

Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on aperture, Tamron 28- wins on weight and focus speed.

The Canon RF50mm F1.8 STM Lens offers excellent value and portability, while the Tamron 28-75mm F/2.8 G2 provides versatility and advanced features. Choose based on your camera system and shooting needs.

Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better

Price

Canon lens is significantly cheaper.

Portability

Canon lens is lighter and more compact.

Simplicity

Canon lens has a fixed focal length for straightforward use.

Why Tamron 28- is better

Versatility

Tamron lens offers a zoom range.

Autofocus

Tamron lens has a faster autofocus system.

Low-Light

Tamron lens maintains f/2.8 across zoom range.

Overall score

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens
75
Tamron 28-
85

Specifications

SpecCanon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensTamron 28-
Focal Length50mm28-75mm
Aperturef/1.8f/2.8
AutofocusSTMVXD
Close FocusN/A7.1in
Price$219$749

Dimension comparison

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensTamron 28-

Overview of the Canon RF50mm F1.8 STM Lens

The Canon RF50mm F1.8 STM Lens is priced at $219.00, making it a budget-friendly choice for EOS R series camera users. This lens boasts a compact design and a large f/1.8 aperture, offering excellent low-light performance and beautiful background blur. Designed specifically for Canon's mirrorless system, this lens enhances the versatility of photography for both beginners and seasoned shooters alike.

The RF50mm lens is a prime lens, which means it has a fixed focal length of 50mm. This allows photographers to focus on composition and creativity without the distractions of zooming in and out. With its optimized lens placement and coatings, it ensures outstanding color balance while minimizing ghosting and flare. This lens is not just about being affordable; it delivers quality performance for various types of photography, from portraits to landscapes.

Overview of the Tamron 28-75mm F/2.8 Di III VXD G2

In contrast, the Tamron 28-75mm F/2.8 Di III VXD G2 is priced at $749.00, making it significantly more expensive than the Canon option. This lens offers a versatile zoom range from 28mm to 75mm, making it suitable for a wide array of shooting scenarios. With a constant f/2.8 aperture, it maintains excellent light-gathering capability across its focal range, making it a robust choice for low-light conditions as well.

The lens features a fast and quiet VXD linear motor for high-speed autofocus, which is particularly beneficial for capturing fast-moving subjects. Its minimum object distance is 7.1 inches, allowing for impressive close-up shots. This lens is compact for a zoom lens, weighing just 19.4 oz, making it a practical choice for photographers who need mobility without sacrificing optical performance.

Build Quality and Design

The Canon RF50mm F1.8 STM Lens is known for its lightweight and compact design, making it easy to carry around for extended periods. Its build is optimized for the EOS R series, ensuring a snug fit that enhances usability. This lens is designed for photographers who prioritize portability and ease of use.

On the other hand, the Tamron 28-75mm F/2.8 G2 lens is slightly larger but still compact for a zoom lens. It features moisture-resistant construction and a fluorine coating, enhancing its durability against the elements. The lens design includes a rubber focusing ring that provides a comfortable grip, which is particularly useful during extended shooting sessions. While the Canon lens is designed specifically for EOS R users, Tamron’s offering caters to Nikon Z mount camera users, balancing versatility and robustness.

Optical Performance

The optical performance of the Canon RF50mm F1.8 STM Lens is enhanced by its large f/1.8 aperture, which allows for stunning background blur and exceptional low-light photography capabilities. The lens uses PMo aspherical elements to suppress aberrations, ensuring high-quality images with vibrant colors and sharp details. This lens excels in portrait photography, where the ability to create soft backgrounds is highly valued.

In comparison, the Tamron 28-75mm F/2.8 G2 also boasts impressive optical performance, particularly with its constant f/2.8 aperture throughout the zoom range. It is designed to meet the high demands of modern digital cameras, offering excellent image quality even at high resolutions. The lens’s VXD autofocus system ensures quick and accurate focusing, making it suitable for both still photography and video work. This makes the Tamron lens a more versatile option for various shooting scenarios.

Compatibility

The Canon RF50mm F1.8 STM Lens is specifically designed for the EOS R series mirrorless cameras, which include models like the EOS R100, EOS R50, and EOS R6. This compatibility ensures that users can take full advantage of the lens’s features and performance without any issues.

Conversely, the Tamron 28-75mm F/2.8 G2 is compatible with Nikon Z mount mirrorless cameras, making it an ideal choice for Nikon users looking for a versatile everyday lens. While both lenses cater to different camera systems, the Canon lens’s fixed focal length may appeal more to those who prefer simplicity, while the Tamron lens offers flexibility for varied shooting conditions.

Price Comparison

The Canon RF50mm F1.8 STM Lens is priced at $219.00, while the Tamron 28-75mm F/2.8 G2 comes in at $749.00. This makes the Canon lens about 71% cheaper than the Tamron lens. For photographers on a budget or those just starting with photography, the Canon lens presents a compelling value.

However, the higher price of the Tamron lens might be justified for those who need the versatility of a zoom lens combined with a constant f/2.8 aperture. This price difference reflects the varying needs and preferences of photographers, where some might prioritize affordability while others might seek advanced features.

Which should you buy?

Deciding between the Canon RF50mm F1.8 STM Lens and the Tamron 28-75mm F/2.8 Di III VXD G2 ultimately depends on your specific photography needs and budget. If you are an EOS R user looking for a compact and affordable lens to enhance your photography, the Canon RF50mm F1.8 is an excellent choice, offering impressive optical performance at a great price.

On the other hand, if you are a Nikon Z mount user in need of a versatile lens that can handle a variety of shooting scenarios, the Tamron 28-75mm F/2.8 G2 provides flexibility and advanced features, albeit at a higher cost. Consider your shooting style, budget, and camera compatibility when making your choice, as both lenses serve unique purposes in the realm of photography.