Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens vs VILTROX AF
Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on aperture and build, VILTROX AF wins on price and weight.
The Canon RF50mm F1.8 STM Lens excels in low-light performance and versatility, while the VILTROX AF 9mm F2.8 offers a budget-friendly ultra-wide-angle option. Choose based on your photography needs.
Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better
Low Light
Canon has a wider f/1.8 aperture.
Versatility
Canon is suitable for various photography styles.
User Experience
Canon includes a control ring for settings.
Why VILTROX AF is better
Price
VILTROX is $20 cheaper.
Wide Angle
VILTROX offers a 113.8° ultra-wide view.
Lightweight
VILTROX is designed to be very portable.
Overall score
Specifications
| Spec | Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens | VILTROX AF |
|---|---|---|
| Aperture | f/1.8 | f/2.8 |
| Focal Length | 50mm | 9mm |
| Compatibility | EOS R | Sony E-Mount |
| Autofocus | STM | STM |
| Weight | 0.5 lbs | 0.4 lbs |
Dimension comparison
Overview of the Canon RF50mm F1.8 STM Lens
The Canon RF50mm F1.8 STM Lens is designed specifically for EOS R series mirrorless cameras, making it a compelling option for photographers seeking a versatile prime lens. Priced at $219.00, it offers a large f/1.8 aperture that excels in low-light conditions and creates a pleasing background blur. This lens is compact and lightweight, enhancing its portability for photographers on the go. Its advanced optical features, including optimized lens placement and coatings, ensure outstanding color balance while minimizing ghosting and flare.
Overview of the VILTROX AF 9mm F2.8 APS-C Lens
The VILTROX AF 9mm F2.8 APS-C Lens, available for $199.00, is an ultra-wide-angle prime lens designed for Sony E-mount cameras. This lens boasts a 113.8° ultra-wide-angle view, ideal for capturing expansive landscapes, interiors, and vlogging. With a bright f/2.8 aperture, it performs well in low-light situations and allows for creative background separation, making it suitable for various photography styles, including astrophotography and expressive portraits. Its compact design makes it easy to carry, while the fast and silent autofocus enhances its usability for both photos and videos.
Build Quality and Design
The Canon RF50mm F1.8 STM Lens features a compact and lightweight design that is suitable for everyday use. Its build quality is optimized for the EOS R system, ensuring a seamless fit and performance. The lens includes a control ring for direct setting changes, adding to its user-friendly design. On the other hand, the VILTROX AF 9mm F2.8 lens is also designed to be lightweight and portable. Its metal lens mount and internal focusing contribute to its durability. Both lenses are crafted for reliability, but the Canon lens may have a slight edge in user experience with its control ring feature.
Performance in Low Light
In low-light conditions, the Canon RF50mm F1.8 shines with its f/1.8 aperture, allowing for ample light to enter and enabling creative depth of field effects. This aperture is particularly beneficial for nighttime photography and indoor settings where lighting may be limited. Conversely, the VILTROX AF 9mm F2.8 also performs reasonably well with its f/2.8 aperture, but it may not match the Canon lens's capabilities in extremely low-light environments. For low-light enthusiasts, the Canon offers a more advantageous option thanks to its wider aperture.
Autofocus Capability
The autofocus systems of both lenses are designed to deliver smooth and quiet performance, which is essential for both photography and video recording. The Canon RF50mm features a Stepping Motor (Gear-Type STM) that provides continuous autofocus during video, ensuring that subjects remain in focus without distracting noise. In comparison, the VILTROX AF 9mm uses a high-precision STM stepping motor, which also guarantees fast and silent autofocus. While both lenses excel in this area, the Canon lens may appeal more to video creators due to its optimized design for continuous focus.
Versatility and Use Cases
The Canon RF50mm is a versatile lens suitable for a range of photography styles, including portraits, landscapes, and street photography. Its fixed focal length encourages creativity in composition, challenging photographers to think more critically about framing. The VILTROX AF 9mm, with its ultra-wide-angle view, excels in specific scenarios like architecture and interior photography, as well as vlogging. Its ability to capture dramatic wide-angle close-ups adds a unique perspective that can be ideal for storytelling. Depending on your primary photography needs, either lens could serve well in different contexts.
Price Comparison
The Canon RF50mm F1.8 STM Lens is priced at $219.00, while the VILTROX AF 9mm F2.8 is slightly cheaper at $199.00. This makes the VILTROX about 9% less expensive than the Canon lens. If budget is a primary concern, the VILTROX lens presents a more economical choice. However, the decision should also factor in the specific features and performance that each lens offers, as they cater to different types of photography.
Which should you buy?
Choosing between the Canon RF50mm F1.8 STM Lens and the VILTROX AF 9mm F2.8 APS-C Lens ultimately depends on your photography style and needs. If you prioritize a versatile, low-light-capable lens suitable for a variety of scenarios, the Canon lens is an excellent choice despite its higher price. However, if you are looking for an ultra-wide-angle lens that excels in specific situations like landscape photography and vlogging, the VILTROX lens is a more budget-friendly option. Consider your primary photography goals to make the most informed decision.

