Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens vs Viltrox
Updated July 2026 — Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens wins on optics and weight, Viltrox wins on price.
The Canon RF50mm F1.8 STM Lens offers superior optical performance and advanced autofocus technology, while the Viltrox 35mm F1.7 E provides a more budget-friendly option with good versatility.
Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better
Optical Quality
Canon lens features advanced coatings and aspherical elements.
Autofocus
Canon's STM technology provides smoother and quieter autofocus.
Compatibility
Canon lens is optimized for EOS R series cameras.
Why Viltrox is better
Price
Viltrox lens is $40 cheaper.
Weight
Viltrox lens is lighter at 170g.
Versatility
Viltrox lens is suitable for a wider range of Sony E-mount cameras.
Overall score
Specifications
| Spec | Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens | Viltrox |
|---|---|---|
| Focal Length | 50mm | 35mm |
| Aperture | f/1.8 | f/1.7 |
| Weight | 200g | 170g |
| Mount Type | Canon RF | Sony E |
| Autofocus Type | STM | Near-silent |
Dimension comparison
Overview of the Canon RF50mm F1.8 STM Lens
The Canon RF50mm F1.8 STM Lens is designed for photographers using EOS R series mirrorless cameras. With a price tag of $219.00, it offers a versatile 50mm focal length, ideal for various photography styles, including portraits and landscapes. The lens features a large f/1.8 aperture, making it suitable for low-light conditions while delivering beautiful background blur.
This lens is compact and lightweight, providing ease of use for on-the-go shooting. It also includes a control ring for direct setting adjustments, enhancing the shooting experience. The RF50mm is compatible with various EOS R models, ensuring a broad range of usability for enthusiasts and professionals alike.
Overview of the Viltrox 35mm F1.7 E
The Viltrox 35mm F1.7 E is a prime lens tailored for Sony E-mount mirrorless cameras, priced at $179.00. This lens provides a 35mm equivalent focal length, making it an excellent choice for portrait and street photography. The f/1.7 maximum aperture allows for effective low-light shooting and offers greater control over depth of field.
At just 170 grams, the lens is lightweight, making it a convenient option for travel and daily photography. The Viltrox also supports EXIF information transmission and USB upgrades, showcasing its modern features. Its design accommodates a wide range of creative needs, catering to those who enjoy versatility in their photography.
Price Comparison
In terms of pricing, the Viltrox 35mm F1.7 E is about 17% cheaper than the Canon RF50mm F1.8 STM Lens, costing $179.00 compared to Canon's $219.00. This price difference may appeal to budget-conscious photographers who still seek quality performance.
Both lenses position themselves within the mid-range market, offering solid features for their respective prices. However, those looking to maximize their investment may find the Viltrox lens to be a more attractive option, particularly for casual or emerging photographers.
Image Quality and Performance
The Canon RF50mm F1.8 STM Lens boasts impressive optical features, including a PMo aspherical lens that minimizes aberrations, along with coatings that reduce flaring and ghosting. This ensures that images are vibrant and clear, crucial for both professional and personal photography.
Conversely, the Viltrox 35mm F1.7 E focuses on delivering natural and sharp images with its bright f/1.7 aperture. While specific optical performance details aren't provided, its design is optimized for both portraits and landscapes. Photographers may find the Viltrox particularly effective for street photography due to its lightweight and versatile nature.
Autofocus and Usability
The Canon RF50mm F1.8 STM Lens includes a stepping motor (Gear-Type STM) that provides smooth and quiet autofocus, which is beneficial during both video recording and still photography. This feature enhances the user experience, especially for videographers who require minimal noise disruption.
On the other hand, the Viltrox 35mm F1.7 E also emphasizes its autofocus capabilities, highlighting a near-silent shutter sound. This makes it suitable for capturing candid moments without drawing attention. Both lenses offer user-friendly experiences, though Canon’s lens may have a slight edge in terms of advanced autofocus technology due to its STM system.
Build Quality and Design
The Canon RF50mm F1.8 STM Lens is noted for its compact and lightweight design, making it easy to carry and handle. Its build quality is aimed at providing durability while maintaining a user-friendly profile for photographers on the move.
Similarly, the Viltrox 35mm F1.7 E lens is designed with travel in mind, weighing only 170 grams. This lightweight construction allows photographers to carry it effortlessly, which can be a significant advantage during long shooting sessions. Both lenses prioritize portability, but the Viltrox's lower weight may appeal more to those prioritizing minimal gear.
Compatibility and Versatility
The Canon RF50mm F1.8 STM Lens is specifically designed for use with EOS R series cameras, ensuring optimal performance and compatibility. Its versatility allows for a wide range of photography styles, from portraits to landscapes, making it a solid choice for various shooting scenarios.
In contrast, the Viltrox 35mm F1.7 E is compatible with a range of Sony E-mount mirrorless cameras, providing flexibility for users within that ecosystem. Its prime portrait-length design makes it suitable for both casual and creative photography, which can accommodate diverse photographic needs.
Which should you buy?
Choosing between the Canon RF50mm F1.8 STM Lens and the Viltrox 35mm F1.7 E ultimately depends on your specific camera system and photography needs. The Canon lens, while priced higher at $219.00, offers advanced autofocus technology and is tailored for EOS R series cameras. It excels in optical performance and is well-suited for a variety of photography styles.
On the other hand, the Viltrox lens, priced at $179.00, provides a cost-effective option with solid performance for Sony E-mount users. Its lightweight design and versatility make it ideal for travelers and street photographers.
Consider your camera compatibility, budget, and the types of photography you pursue to select the lens that best fits your needs.

