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

Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on compatibility and aperture, Tamron wins on weight and price.

The Canon RF50mm F1.8 STM Lens excels in low-light performance and portraiture, while the Tamron 24mm F/2.8 Di III OSD M1:2 Lens offers a more budget-friendly option with versatility for landscapes.

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

Aperture

Larger f/1.8 aperture for low-light performance

Compatibility

Designed specifically for EOS R series cameras

Versatility

Better for portraits and creative compositions

Why Tamron is better

Price

Lower price of $199.00

Weight

Lighter at 7.6 ounces

Wide-angle

Better for landscapes with 24mm focal length

Overall score

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens
85
Tamron
78

Specifications

SpecCanon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensTamron
Focal Length50mm24mm
Max Aperturef/1.8f/2.8
Min Object Distance0.45m0.12m
AutofocusSTMOSD
Build QualityHighMedium

Dimension comparison

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

Introduction to the Lenses

When comparing the Canon RF50mm F1.8 STM Lens and the Tamron 24mm F/2.8 Di III OSD M1:2 Lens, each lens offers unique advantages suited to different photography styles. The Canon lens is priced at $219.00, while the Tamron lens comes in at a slightly lower price of $199.00, making it about 9% cheaper. Understanding these differences can help you choose the lens that best fits your needs.

Design and Build Quality

The Canon RF50mm F1.8 STM Lens boasts a compact and lightweight design, making it a convenient option for photographers on the go. This lens is specifically designed for EOS R series mirrorless cameras, enhancing its compatibility and ease of use. On the other hand, the Tamron 24mm F/2.8 Di III OSD M1:2 Lens is also compact, measuring just 2.5 inches in length and weighing 7.6 ounces, which makes it extremely portable. Both lenses prioritize portability, but the Tamron might edge out slightly in terms of weight and compactness.

Focal Length and Aperture

The Canon RF50mm F1.8 features a fixed focal length of 50mm with a large f/1.8 aperture, making it ideal for low-light photography and achieving beautiful background blur. This can greatly enhance portrait and close-up shots. In contrast, the Tamron lens offers a 24mm focal length with an f/2.8 aperture. While it may not be as effective in low-light conditions, its wider field of view is excellent for landscape and urban photography. The choice here comes down to whether you prefer the versatility of the 50mm for portraits or the expansive view of the 24mm for landscapes.

Autofocus Performance

Autofocus performance is crucial for many photographers, and both lenses utilize different technologies. The Canon RF50mm employs a Stepping Motor (Gear-Type STM) that provides smooth and quiet continuous autofocus, particularly beneficial during video recording. The Tamron lens also features advanced optical design, allowing for a 1:2 maximum magnification ratio for detailed macro-style shots. The Canon lens may have a slight advantage for videographers, while the Tamron could appeal more to those interested in macro photography.

Optical Quality

When it comes to optical quality, both lenses are designed to deliver sharp images while minimizing aberrations. The Canon RF50mm lens includes optimized lens placement and coatings that help achieve outstanding color balance, reducing ghosting and flare. The Tamron 24mm lens incorporates special glass materials that effectively quash aberrations, providing outstanding optical performance across the entire frame. Both lenses excel in delivering high-quality images, but the choice may depend on specific shooting scenarios and personal preference.

Versatility and Practical Use

The Canon RF50mm is notably versatile, suitable for a wide range of scenes from portraits to landscapes. Its fixed focal length encourages creativity in composition. The Tamron 24mm, being a wide-angle lens, excels in capturing expansive landscapes and intricate details in close-up shots, thanks to its minimum object distance of 4.7 inches. This versatility makes the Tamron an excellent option for travelers and street photographers who need to capture a variety of scenes without switching lenses.

Price and Value Proposition

At $219.00, the Canon RF50mm lens comes with a price tag that reflects its premium design and optical capabilities. In contrast, the Tamron lens is priced at $199.00, making it more accessible to those on a budget. The price difference of approximately $20 may not seem substantial, but it could be a deciding factor for those prioritizing cost-effectiveness without sacrificing quality. Both lenses offer great value, but the Tamron provides a slightly more attractive price point.

Which should you buy?

Choosing between the Canon RF50mm F1.8 STM Lens and the Tamron 24mm F/2.8 Di III OSD M1:2 Lens ultimately boils down to your specific photography needs. If you favor low-light performance and portraiture, the Canon lens stands out with its larger aperture and compatibility with EOS R series cameras. However, if you seek a lightweight, versatile lens that excels in capturing landscapes and has a more budget-friendly price, the Tamron lens is an excellent choice. Both lenses offer distinct benefits that cater to different styles, so consider how you plan to use the lens before making your decision.