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

Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on image quality and autofocus, Viltrox wins on weight and price.

The Canon RF50mm F1.8 STM Lens offers better optical performance, while the Viltrox 25mm F1.7 E is a more budget-friendly option. Choose based on your camera system and budget.

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

Optical Quality

Canon lens has superior optical optimizations.

Low-Light Performance

Canon's f/1.8 aperture provides excellent background blur.

Compatibility

Canon lens is specifically designed for EOS R series.

Why Viltrox is better

Price

Viltrox lens is $43 cheaper.

Weight

Viltrox lens is lighter at 170g.

Versatility

Viltrox lens is suitable for a wider range of Sony cameras.

Overall score

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

Specifications

SpecCanon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensViltrox
Aperturef/1.8f/1.7
Weight200g170g
CompatibilityCanon EOS RSony E-mount
AutofocusSTMSTM
Price$219.00$176.00

Dimension comparison

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

Introduction

When it comes to choosing a lens for your mirrorless camera, both the Canon RF50mm F1.8 STM Lens and the Viltrox 25mm F1.7 E offer compelling features. However, these two lenses cater to different shooting styles and preferences. The Canon lens is priced at $219.00, while the Viltrox lens is available for about $176.00, making it approximately 17% cheaper. This article will delve into various aspects of each lens to help you make an informed decision.

Price Comparison

The price difference between the Canon RF50mm F1.8 STM Lens and the Viltrox 25mm F1.7 E is significant for budget-conscious photographers. The Canon lens is listed at $219.00, while the Viltrox lens is more budget-friendly at $176.00. This price advantage of $43 means that if you're looking to save, the Viltrox lens offers a more economical option without sacrificing essential features. While both lenses provide exceptional image quality, the lower price tag on the Viltrox may appeal more to those just starting out or looking to expand their lens collection without breaking the bank.

Build Quality and Design

In terms of build quality, both lenses are designed with usability in mind, but they differ in weight and compatibility. The Canon RF50mm, with its compact design, is lightweight, which is ideal for portability. However, the Viltrox 25mm weighs only 170 grams, making it even lighter and easier to carry, especially for travel. This lightweight design can be a significant advantage for photographers who frequently shoot on the go. Additionally, both lenses are optimized for their respective camera systems, ensuring that users can expect reliable performance and quality.

Aperture and Low-Light Performance

One of the standout features of both lenses is their ability to perform well in low-light conditions, thanks to their wide apertures. The Canon RF50mm boasts a maximum aperture of f/1.8, allowing for excellent background blur and performance in dim settings. On the other hand, the Viltrox 25mm offers an even wider maximum aperture of f/1.7, which can provide slightly better performance in low-light situations and greater control over depth of field. This difference may seem minor, but it can be crucial for photographers who often shoot in challenging lighting.

Autofocus Capabilities

Both lenses incorporate advanced autofocus technology to enhance the shooting experience. The Canon RF50mm features a Stepping Motor (Gear-Type STM) that delivers smooth and quiet continuous autofocus, making it suitable for both photo and video recording. The Viltrox 25mm also employs an STM stepper motor, which provides a similarly quiet autofocus experience. Both lenses support face and eye recognition, ensuring accurate focus on subjects. However, the Viltrox lens touts its ability to excel in various shooting modes, which could be beneficial for those who frequently switch between stills and video.

Image Quality

When it comes to image quality, both lenses are engineered to deliver outstanding performance. The Canon RF50mm uses optimized lens placement and coatings to minimize ghosting and flare while maintaining excellent color balance. This attention to detail allows for stunning images, whether in portraits or landscapes. The Viltrox 25mm, while not explicitly detailed in its description, is designed for sharpness and clarity, particularly in low-light conditions. Overall, both lenses provide high-quality images, but the Canon may have a slight edge due to its additional optical optimizations.

Compatibility

Compatibility is another critical factor to consider when choosing between these two lenses. The Canon RF50mm is specifically designed for the EOS R series mirrorless cameras, ensuring a seamless fit and optimal functionality. In contrast, the Viltrox 25mm is compatible with a range of Sony E-mount mirrorless cameras, including models like ZV-E10 II, A6700, A6600, A6400, and A7C II. This broader compatibility may appeal to Sony users looking for a reliable prime lens option.

Intended Use and Versatility

The intended use and versatility of each lens differ slightly. The Canon RF50mm is a classic focal length that excels in various scenarios, from portraits to street photography. Its fixed focal length encourages creativity and composition skills, making it a great addition to any photographer’s kit. Conversely, the Viltrox 25mm is also versatile but leans towards a wider perspective, making it suitable for everyday use, travel, and vlogging. The choice between the two ultimately depends on your preferred shooting style and the types of images you wish to capture.

Which should you buy?

In conclusion, both the Canon RF50mm F1.8 STM Lens and the Viltrox 25mm F1.7 E have distinct advantages that cater to different types of photographers. If you're looking for a lens with a slightly better low-light performance and are using a Canon EOS R series camera, the Canon lens may be worth the investment. However, if you're seeking a more budget-friendly option with versatile capabilities and lightweight design for a Sony camera, the Viltrox lens stands out as an excellent choice. Ultimately, your decision should reflect your specific needs, camera compatibility, and budget considerations.