Canon RF 75- vs YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus
Updated July 2026 — Canon RF 75- wins on focal length and autofocus, YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus wins on aperture.
The Canon RF 75-300mm lens offers superior versatility and performance, making it the better choice for most photographers. However, the YONGNUO lens provides excellent value for those focused on portraits.
Why Canon RF 75- is better
Versatility
Canon lens has a zoom range of 75-300mm.
Autofocus
Canon lens features a responsive DC motor.
Optical Quality
Canon lens has advanced coatings for better image quality.
Why YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus is better
Price
YONGNUO lens is significantly cheaper at $82.
Aperture
YONGNUO lens has a larger f/1.8 aperture.
Weight
YONGNUO lens is lighter and more compact.
Overall score
Specifications
| Spec | Canon RF 75- | YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus |
|---|---|---|
| Focal Length | 75-300mm | 50mm |
| Aperture | f/4-5.6 | f/1.8 |
| Weight | 1.1 lbs | 0.6 lbs |
| Autofocus | DC Motor | Yes |
| Compatibility | RF Mount | EF Mount |
Dimension comparison
Overview of the Canon RF 75-300mm f/4-5.6 Lens
The Canon RF 75-300mm f/4-5.6 Lens stands out with its versatile focal range and lightweight design, making it ideal for various photography styles. Priced at $253.95, this lens is geared towards sports, wildlife, and travel photography, fitting both full-frame and APS-C mirrorless cameras. With a weight of just over 1 lb, it balances portability and performance well, making it a practical choice for those who need extended reach without excessive bulk.
Overview of the YONGNUO YN50mm F1.8 Lens
The YONGNUO YN50mm F1.8 Lens is significantly more affordable at $82.00, offering a large aperture that enhances background blur for creative photography. This lens is compatible with Canon EF mount cameras and supports both auto and manual focus modes. Its compact structure and lightweight design make it an excellent option for portrait photography, where depth of field and sharp focus are essential.
Focal Length and Versatility Comparison
The Canon RF 75-300mm provides an extensive focal length range of 75-300mm, equivalent to 120-480mm on APS-C cameras. This versatility allows photographers to capture distant subjects, making it a great choice for wildlife and sports photography. In contrast, the YONGNUO YN50mm features a fixed 50mm focal length. While the YN50mm excels in portraiture due to its wide aperture, it lacks the zoom capability that the Canon lens offers, limiting its versatility for various shooting situations.
Aperture and Image Quality
The Canon RF 75-300mm has a variable aperture of f/4-5.6, which is decent for general photography but may struggle in low-light conditions compared to the YONGNUO YN50mm’s larger f/1.8 aperture. The larger aperture of the YN50mm allows for better light intake, creating a more pronounced bokeh effect and greater creative control over depth of field. Thus, if low-light performance and artistic background blur are priorities, the YONGNUO lens is the clear winner here.
Build Quality and Design
The Canon RF 75-300mm is designed with a lightweight and compact build, making it easy to carry for long periods. It weighs just over 1 lb, making it a practical choice for travel. The lens also incorporates Canon’s Super Spectra Coating, which minimizes lens flare and ghosting while enhancing color fidelity. The YONGNUO YN50mm is also lightweight but doesn't have the same advanced optical design features, which might affect overall image quality when shooting in challenging lighting conditions.
Autofocus Performance
The autofocus of the Canon RF 75-300mm is driven by a DC motor, delivering responsive and accurate focusing performance suitable for both stills and video. This is particularly beneficial in fast-paced shooting environments like sports and wildlife photography. The YONGNUO YN50mm also supports auto focus, but its performance may not be as refined as that of the Canon lens, especially under rapidly changing conditions. Therefore, for users prioritizing speed and reliability in autofocus, the Canon lens offers a significant advantage.
Price and Value Proposition
At $253.95, the Canon RF 75-300mm is more expensive than the YONGNUO YN50mm, which costs $82.00. This price difference of about 209% reflects the Canon lens’s advanced features, versatility, and build quality. For photographers looking for a dedicated telephoto option, the investment in the Canon lens may be justified. However, for those on a budget or primarily focused on portrait photography, the YONGNUO provides excellent value for money without sacrificing essential image quality.
Which should you buy?
Choosing between the Canon RF 75-300mm f/4-5.6 Lens and the YONGNUO YN50mm F1.8 Lens ultimately depends on your photography needs. If you require a versatile telephoto lens for sports, wildlife, or travel, the Canon RF 75-300mm is the superior choice with its extensive focal range and advanced optical features. However, for those who prioritize affordability and are focused on portrait photography or low-light conditions, the YONGNUO YN50mm offers exceptional value with its large aperture and compact design.

