VILTROX AF vs YNLENS YONGNUO YN50mm
Updated July 2026 — VILTROX AF wins on angle and length, YNLENS YONGNUO YN50mm wins on weight and focus distance.
The VILTROX AF 9mm F2.8 is ideal for wide-angle photography, while the YONGNUO YN50mm 50mm f/1.8 excels in portraiture and low-light conditions. Choose based on your specific photography needs.
Why VILTROX AF is better
Wide Angle
VILTROX offers ultra-wide-angle capabilities.
Autofocus
Fast and silent autofocus system.
Lightweight
Compact design for portability.
Why YNLENS YONGNUO YN50mm is better
Low-Light
YONGNUO has a larger f/1.8 aperture.
Price
YONGNUO is significantly cheaper.
Portraits
YONGNUO is tailored for portrait photography.
Overall score
Specifications
| Spec | VILTROX AF | YNLENS YONGNUO YN50mm |
|---|---|---|
| Mount | Sony E | Nikon F |
| Aperture | f/2.8 | f/1.8 |
| Autofocus | Yes | Yes |
| Weight | 200g | 203g |
| Usage | Wide-Angle | Portrait |
Dimension comparison
Overview of the VILTROX AF 9mm F2.8 and YONGNUO YN50mm 50mm f/1.8
The VILTROX AF 9mm F2.8 is designed for Sony E-Mount cameras, offering an ultra-wide angle view with a bright aperture. In contrast, the YONGNUO YN50mm 50mm f/1.8 serves Nikon F-Mount cameras, specializing in portrait photography with its large aperture. The price difference between these two lenses is substantial, with the VILTROX priced at $199.00 and the YONGNUO at $102.00, making the latter about 48% cheaper.
Intended Usage
The VILTROX AF 9mm F2.8 excels in wide-angle photography, making it ideal for landscapes, architecture, and vlogging. Its 113.8° ultra-wide-angle view is perfect for capturing expansive scenes. On the other hand, the YONGNUO YN50mm 50mm f/1.8 is tailored for portrait photography, delivering beautiful background blur thanks to its large f/1.8 aperture. This lens is particularly suited for wedding photography and street photography, where capturing details and expressions is crucial.
Aperture and Low-Light Performance
The VILTROX features a bright f/2.8 aperture, which is adequate for low-light conditions and allows for some background separation. However, the YONGNUO shines in this category with its f/1.8 aperture, offering superior low-light performance. This not only enhances creative possibilities in dim environments but also allows for a shallower depth of field, making it the preferred choice for portrait photographers who aim for that creamy bokeh effect.
Autofocus Capabilities
When it comes to autofocus, the VILTROX AF 9mm boasts a fast and silent autofocus system, thanks to its high-precision STM stepping motor. This makes it a reliable option for both photo and video shooting, especially in dynamic situations. The YONGNUO YN50mm, while also featuring autofocus, allows for manual switching, providing more control over depth of field and exposure. Both lenses cater to different user preferences, with the VILTROX leaning towards videographers and the YONGNUO appealing to those who value manual adjustments.
Build Quality and Design
The VILTROX AF 9mm is designed to be lightweight and compact, making it portable for various shooting situations. Its internal focusing system and USB-C firmware upgrade support add to its long-term reliability. Conversely, the YONGNUO YN50mm features a high-precision metal bayonet and gold-plated contacts, enhancing its durability. Weighing only 203g, it is also lightweight, which is an advantage for photographers on the go. Both lenses emphasize portability, but the VILTROX offers additional technological support with its firmware capabilities.
Compatibility
The VILTROX AF 9mm is explicitly designed for Sony E-Mount cameras, compatible with a range of models including the ZV-E10, a6000 series, and a7 series. In contrast, the YONGNUO YN50mm caters to Nikon F-Mount cameras, fitting models like the D3000 and D5000 series. Depending on your camera system, your choice may be restricted to one of these lenses, making compatibility a crucial factor.
Price Consideration
The price difference is significant, with the VILTROX AF 9mm coming in at $199.00 while the YONGNUO YN50mm is priced at $102.00. This difference of $97.00 means the YONGNUO is almost 48% less expensive than the VILTROX. For budget-conscious photographers, this makes the YONGNUO a more appealing option without sacrificing quality, especially for those who primarily shoot portraits.
Which should you buy?
Choosing between the VILTROX AF 9mm F2.8 and YONGNUO YN50mm 50mm f/1.8 ultimately depends on your photographic needs. If you require an ultra-wide-angle lens for landscapes and vlogging, the VILTROX is your best bet despite its higher price. However, if you're focused on portrait photography and want excellent low-light performance along with significant cost savings, the YONGNUO is the clear winner. Both lenses have their strengths, but the decision should be based on the type of photography you plan to pursue.

