Canon RF vs YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus
Updated July 2026 — Canon RF wins on price and autofocus, YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus wins on compatibility.
The Canon RF 50mm F1.8 STM Lens offers superior performance and brand reputation, while the YONGNUO YN50mm F1.8 Lens provides a budget-friendly alternative.
Why Canon RF is better
Brand Reputation
Canon is a well-established brand known for quality.
Autofocus Performance
Canon's STM motor provides smoother and quieter autofocus.
Image Quality
Canon lens has advanced coatings for better image clarity.
Why YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus is better
Price
YONGNUO is significantly cheaper at $82.
Compatibility
YONGNUO supports both full-frame and APS-C cameras.
User Experience
YONGNUO offers good functionality for beginners.
Overall score
Specifications
| Spec | Canon RF | YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus |
|---|---|---|
| Aperture | f/1.8 | f/1.8 |
| Mount Type | RF | EF |
| Focus Type | Auto/Manual | Auto/Manual |
| Weight | 0.5 lbs | 0.6 lbs |
| Coating | Super Spectra | Multi-coated |
Dimension comparison
Price Comparison
When it comes to pricing, the YONGNUO YN50mm F1.8 Lens is significantly cheaper than the Canon RF 50mm F1.8 STM Lens. The YONGNUO lens is available for $82.00, whereas the Canon lens costs $219.00. This means the YONGNUO lens is about 63% less expensive than its Canon counterpart. For budget-conscious photographers or those just starting, the YONGNUO lens presents a compelling option without a hefty financial commitment.
Brand Reputation
The Canon RF 50mm F1.8 STM Lens comes from a well-established brand known for its high-quality imaging products, while the YONGNUO brand is relatively new in the market. Canon has a long-standing reputation for reliability and performance in the photography industry. This legacy might give potential buyers more confidence in the Canon lens's durability and performance. Conversely, YONGNUO offers a more budget-friendly alternative that appeals to those who may not require the same level of brand prestige.
Build Quality
The Canon RF 50mm F1.8 STM Lens features an aspheric lens element and a Super Spectra Coating, which enhance image quality and minimize ghosting and flare. This lens is designed for durability and ease of use, particularly with EOS R-Series cameras. The YONGNUO YN50mm F1.8 Lens, while also offering a solid construction, does include features such as gold-plated metal contacts that improve signal conductivity and corrosion resistance. However, it lacks the advanced coating technology found in the Canon lens, making the Canon potentially more robust in challenging shooting conditions.
Autofocus Performance
Both lenses boast autofocus capabilities, but the Canon RF 50mm F1.8 STM Lens includes a stepper motor (STM) that provides smooth, fast, and nearly silent autofocus. This is particularly beneficial for videographers or photographers who need to capture quick moments without disturbing the environment. The YONGNUO lens supports both autofocus and manual focus modes, allowing for versatility, but it may not reach the same level of performance in silent operation that the Canon lens offers.
Image Quality
In terms of image quality, the Canon RF 50mm F1.8 STM Lens is designed to deliver sharp images with beautiful background blur, thanks to its wide f/1.8 aperture. This feature makes it ideal for portraits and creative photography. The YONGNUO YN50mm F1.8 Lens also has a large f/1.8 aperture, which allows for virtual background effects, enhancing the photographic experience. However, the advanced features of the Canon lens, such as its specific coatings and aspheric elements, may provide an edge in reducing aberrations and improving overall image clarity.
Compatibility
The Canon RF 50mm F1.8 STM Lens is specifically designed for the RF mount, making it an excellent choice for users of EOS R-Series cameras. In contrast, the YONGNUO YN50mm F1.8 Lens is compatible with Canon EF mount cameras, which includes both full-frame and APS-C format cameras. This broader compatibility might appeal to photographers who own a variety of Canon cameras, but it also means that the YONGNUO lens may not be optimized for the latest RF technology.
User Experience
The Canon RF 50mm F1.8 STM Lens is designed for a smooth user experience, featuring a focus distance indicator that aids in measuring shooting distance and depth of field. This can be especially helpful for new photographers learning the intricacies of their craft. The YONGNUO lens also includes a focus distance indicator and supports various shooting modes (M/AV/TV/P), which enhances its usability. However, users may find Canon's lens to be more intuitive and streamlined based on its design and motor performance.
Which should you buy?
Ultimately, the choice between the Canon RF 50mm F1.8 STM Lens and the YONGNUO YN50mm F1.8 Lens comes down to your specific needs and budget. If you prioritize brand reputation, advanced features, and superior performance, the Canon lens is the clear winner, albeit at a higher price point of $219.00. On the other hand, if you are looking for a more economical option without sacrificing too much in terms of quality, the YONGNUO lens at $82.00 is about 63% less expensive and offers good functionality, particularly for beginners or casual photographers.

