Canon RF28mm F2.8 STM Lens, RF Mount, Wide-Angle vs YONGNUO YN50mm F1.8C Lens, Large Aperture Auto Focus Lens,
Updated July 2026 — Canon RF28mm F2.8 STM Lens, RF Mount, Wide-Angle wins on focus speed and weight, YONGNUO YN50mm F1.8C Lens, Large Aperture Auto Focus Lens, wins on aperture and length.
The Canon RF28mm F2.8 STM Lens offers superior image quality and video performance, while the YONGNUO YN50mm F1.8C Lens is a budget-friendly option with good low-light capabilities.
Why Canon RF28mm F2.8 STM Lens, RF Mount, Wide-Angle is better
Image Quality
Canon lens has advanced coatings and aspheric elements.
Video Performance
Canon lens features smooth autofocus for video.
Wide-Angle
Canon lens provides wider coverage suitable for various photography.
Why YONGNUO YN50mm F1.8C Lens, Large Aperture Auto Focus Lens, is better
Price
YONGNUO lens is significantly cheaper.
Low-Light
YONGNUO lens has a faster aperture for low-light shooting.
Compatibility
YONGNUO lens works with a wider range of Canon DSLRs.
Overall score
Specifications
| Spec | Canon RF28mm F2.8 STM Lens, RF Mount, Wide-Angle | YONGNUO YN50mm F1.8C Lens, Large Aperture Auto Focus Lens, |
|---|---|---|
| Focal Length | 28mm | 50mm |
| Max Aperture | f/2.8 | f/1.8 |
| Mount Type | RF | EF |
| Minimum Focus | 0.23m | 0.45m |
| Image Stabilization | No | No |
Dimension comparison
Overview of the Canon RF28mm F2.8 STM Lens and YONGNUO YN50mm F1.8C Lens
The Canon RF28mm F2.8 STM Lens is priced at $299.00, while the YONGNUO YN50mm F1.8C Lens comes in significantly lower at $132.29, making it about 56% cheaper than the Canon option. Both lenses cater to different photography needs, with the Canon focusing on wide-angle shots suitable for full-frame cameras, and the YONGNUO lens offering a large aperture for low-light photography. Understanding their features and applications is crucial for photographers looking to choose between these two options.
Design and Build Quality
The Canon RF28mm F2.8 STM Lens boasts a super-compact and lightweight design, making it an ideal travel companion. Its pancake design means it never gets in the way, allowing for ease of use in various shooting scenarios. On the other hand, the YONGNUO YN50mm F1.8C Lens, while also compact at 2 inches in length, is designed primarily for Canon EF mount cameras. Both lenses are easy to carry, but the Canon lens’s sleek design offers a slight edge in portability.
Image Quality and Performance
In terms of image quality, the Canon RF28mm F2.8 STM Lens shines with its three aspheric elements and Canon Super Spectra Coating, which minimize ghosting and flare. This lens is engineered for excellent image quality, suitable for both stills and video. Conversely, the YONGNUO YN50mm F1.8C offers a fast maximum aperture of f/1.8, which enhances low-light performance and edge-to-edge sharpness. While both lenses promise good image quality, the Canon lens may appeal more to photographers focused on video and wider shots.
Focusing Capabilities
The Canon RF28mm F2.8 STM Lens features a Canon leadscrew type STM focus drive, which is particularly beneficial for smooth and quiet autofocus during video recording. This makes it a great choice for videographers. In contrast, the YONGNUO YN50mm F1.8C supports both auto and manual focus, providing versatility for different shooting styles. However, it may not offer the same level of smooth operation during video use as the Canon lens.
Versatility in Usage
The Canon RF28mm F2.8 STM is designed for full-frame EOS R series cameras, and it can also be used effectively with APS-C cameras, providing a focal length equivalent of approximately 45mm. This versatility makes it a great option for travel, street photography, and casual videography. The YONGNUO YN50mm F1.8C, while primarily designed for Canon EF mount cameras, works well with a variety of models, enhancing its usability. Each lens excels in different settings, with the Canon lens leaning towards wider applications and the YONGNUO providing fantastic capabilities for portrait and low-light photography.
Price and Value
The Canon RF28mm F2.8 STM Lens is priced at $299.00, while the YONGNUO YN50mm F1.8C is available for $132.29, making it about 56% less expensive. The significant price difference may influence buyers, especially those on a budget. While the Canon lens offers advanced features and superior image quality, the YONGNUO lens provides excellent value for money, catering to those who need a reliable lens without breaking the bank.
Compatibility with Camera Systems
The Canon RF28mm F2.8 STM Lens is compatible with full-frame EOS R series cameras and APS-C sensor models, making it a flexible choice for those invested in the Canon ecosystem. The YONGNUO YN50mm F1.8C, designed for Canon EF mount cameras, makes it compatible with a wide range of Canon DSLRs, including popular models like the 5D and 7D. This variety ensures that both lenses can meet the needs of different photographers, depending on their camera setup.
Which should you buy?
Choosing between the Canon RF28mm F2.8 STM Lens and the YONGNUO YN50mm F1.8C Lens ultimately depends on your specific photography needs and budget. If you prioritize wide-angle capabilities and high-quality video performance, the Canon lens at $299.00 is the better investment. However, if you're looking for a budget-friendly option that excels in low light and offers versatility, the YONGNUO lens at $132.29 stands out as an excellent choice. Each lens has its strengths, making them suitable for different kinds of photography enthusiasts.

