VILTROX vs YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus
Updated July 2026 — VILTROX wins on weight and autofocus, YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus wins on price and aperture.
The VILTROX 20mm f2.8 FE excels in autofocus speed and optical design, while the YONGNUO YN50mm F1.8 offers better low-light performance and affordability.
Why VILTROX is better
Autofocus Speed
VILTROX has faster autofocus performance.
Optical Design
VILTROX features a more complex optical structure.
Weight
VILTROX is lighter at 157 grams.
Why YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus is better
Price
YONGNUO is significantly cheaper at $82.
Aperture
YONGNUO has a larger aperture of f1.8.
Compatibility
YONGNUO is compatible with Canon EF mount.
Overall score
Specifications
| Spec | VILTROX | YONGNUO YN50mm F1.8 Lens Large Aperture Auto Focus |
|---|---|---|
| Focal Length | 20mm | 50mm |
| Aperture | f2.8 | f1.8 |
| Weight | 157g | N/A |
| Autofocus | Fast | Auto/Manual |
| Optical Elements | 10 elements | 6 elements |
Dimension comparison
Overview of the VILTROX 20mm f2.8 FE and YONGNUO YN50mm F1.8
The VILTROX 20mm f2.8 FE is priced at $176.00, while the YONGNUO YN50mm F1.8 is significantly cheaper at $82.00. This price difference of about 53% makes the YONGNUO a more budget-friendly option for photographers.
The VILTROX 20mm f2.8 FE is designed for Sony e-Mount cameras, offering a fast autofocus system, making it ideal for capturing fast-moving subjects. In contrast, the YONGNUO YN50mm F1.8 is compatible with Canon EF mount cameras and boasts a large aperture, which enhances its capability in low-light environments. Both lenses serve distinct purposes and cater to different user needs within the photography community.
Autofocus Performance
The VILTROX 20mm f2.8 FE excels with its fast autofocus performance, which is particularly beneficial for photographers aiming to capture action shots. Its ability to support EXIF information transmission enhances usability during shoots. On the other hand, the YONGNUO YN50mm F1.8 also allows for auto and manual focus modes, making it versatile for various shooting styles. While the VILTROX emphasizes speed, the YONGNUO offers a balance of ease and flexibility, catering to different preferences in autofocus functionality.
Lens Design and Structure
The VILTROX 20mm f2.8 FE features an optical structure comprising 10 elements in 8 groups, which includes 2 ED lenses and aspherical lenses. This design minimizes distortion and maximizes clarity in images. Conversely, the YONGNUO YN50mm F1.8 features a simpler structure with 5 groups and 6 elements. While both lenses are capable of producing high-quality images, the more complex design of the VILTROX may yield sharper images, especially in challenging conditions.
Portability and Weight
The VILTROX 20mm f2.8 FE weighs only 157 grams, making it a compact option for photographers who prioritize portability. This lightweight design is ideal for street photography or travel, where carrying less weight can be beneficial. The YONGNUO YN50mm F1.8 does not specify its weight, but typically, 50mm lenses are also reasonably portable. However, the clear advantage in weight goes to the VILTROX, ensuring it can be easily carried and quickly deployed for impromptu shooting scenarios.
Focal Length and Versatility
With a focal length of 20mm, the VILTROX 20mm f2.8 FE is a wide-angle lens, perfect for capturing expansive landscapes or architectural shots. This versatility allows for more creative compositions in various shooting environments. In contrast, the YONGNUO YN50mm F1.8 has a standard focal length of 50mm, making it a prime lens suitable for portraits and everyday photography. Each lens serves a different niche, and the choice between them largely depends on the type of photography the user plans to pursue.
Aperture and Low-Light Performance
The YONGNUO YN50mm F1.8 features a large aperture of f1.8, which significantly enhances its performance in low-light conditions. This makes it a great option for indoor photography or evening shoots where lighting is limited. Meanwhile, the VILTROX 20mm f2.8, while not as fast, still offers decent low-light performance due to its wide angle. However, for those specifically seeking low-light capabilities, the YONGNUO presents a clear advantage with its larger maximum aperture.
Price Analysis
The VILTROX 20mm f2.8 FE is priced at $176.00, whereas the YONGNUO YN50mm F1.8 is available for $82.00. This places the YONGNUO at about 53% lower price, making it a more accessible option for entry-level photographers or those on a budget. While the VILTROX may offer advanced features and superior optical design, the significant price difference could sway budget-conscious buyers toward the YONGNUO.
Which should you buy?
Choosing between the VILTROX 20mm f2.8 FE and the YONGNUO YN50mm F1.8 ultimately depends on your specific photography needs and budget. If you are a Sony e-Mount user looking for a lightweight, fast autofocus lens for wide-angle shots, the VILTROX is an excellent choice. However, if you are a Canon EF user who prioritizes low-light performance and affordability, the YONGNUO is a compelling option. Each lens has its strengths, and the decision should be guided by the intended use and camera compatibility.

