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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 weight and aperture, VILTROX wins on value.

The Canon RF50mm F1.8 STM Lens offers superior low-light performance and compatibility for Canon users, while the VILTROX 50mm F2 provides excellent value and portability for Sony users.

Why Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens is better

Low-Light

Larger f/1.8 aperture for better low-light performance

Compatibility

Optimized for Canon EOS R series cameras

Optical Quality

Superior color balance and minimal ghosting

Why VILTROX is better

Price

$20 cheaper than the Canon lens

Weight

Lighter at 205g compared to Canon's weight

Bokeh

9-blade aperture for smoother background blur

Overall score

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime Lens
88
VILTROX
82

Specifications

SpecCanon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensVILTROX
Focal Length50mm50mm
Aperturef/1.8f/2.0
WeightUnknown205g
Motor TypeSTMSTM
CompatibilityCanon EOS RSony E-mount

Dimension comparison

Canon RF50mm F1.8 STM Lens, Fixed Focal Length Prime LensVILTROX

Overview of the Canon RF50mm F1.8 STM Lens

The Canon RF50mm F1.8 STM Lens is designed for those who own EOS R series mirrorless cameras. With a price of $219.00, it offers a compact and lightweight solution for photographers. The lens boasts a large f/1.8 aperture, which is advantageous for low-light photography and creating beautiful background blur. Its stepping motor ensures quiet and smooth autofocus, making it suitable for both video and still photography. This lens is optimized for the EOS R system, ensuring excellent color balance and minimal ghosting and flare.

Overview of the VILTROX 50mm F2 Full Frame Lens

The VILTROX 50mm F2 Full Frame Lens is priced at $199.00, making it about 9% cheaper than the Canon lens. It is specifically designed for Sony E-mount cameras, featuring a fast f/2.0 aperture that is ideal for a variety of subjects, including portraits. The lens incorporates a 9-blade circular aperture, enhancing the quality of bokeh in your images. Additionally, it is lightweight at just 205 grams, which contributes to its portability, making it a great option for photographers on the go.

Build Quality and Design

The build quality of the Canon RF50mm F1.8 STM Lens reflects its compact design, making it easy to carry and handle. Its lightweight construction allows for extended shooting without fatigue. In comparison, the VILTROX 50mm F2 also emphasizes a compact design, weighing only 205 grams. Both lenses are designed to be user-friendly, but the VILTROX lens includes a 9-blade circular aperture, which further enhances its optical performance. Both lenses are well-suited for various shooting conditions, but the slight weight advantage of the VILTROX lens may appeal to those prioritizing portability.

Optical Performance

Optical performance is a key strength of both lenses. The Canon RF50mm F1.8 STM features a large f/1.8 aperture, which excels in low-light situations and offers a creamy bokeh. The lens is designed with optimized lens placement and coatings to deliver outstanding color balance while minimizing ghosting and flare. On the other hand, the VILTROX 50mm F2 uses a 9-group, 13-element structure, which includes three ED, four HR, and one aspherical element. This design enhances sharpness and reduces optical aberrations, making it a strong contender in terms of image quality. Both lenses perform admirably, but the VILTROX lens may edge out in terms of optical complexity.

Autofocus Capabilities

Autofocus capabilities are crucial for both videographers and photographers. The Canon RF50mm F1.8 STM is equipped with a gear-type stepping motor (STM), providing smooth and quiet continuous autofocus. This feature is particularly beneficial during video recording. The VILTROX 50mm F2 also boasts a stepping motor, ensuring fast and quiet autofocus performance. Both lenses are designed for reliable autofocus; however, the Canon lens's specific compatibility with the EOS R series could give it an edge for Canon users, while the VILTROX lens is optimized for Sony models.

Versatility in Shooting

Versatility is a significant factor when choosing a lens. The Canon RF50mm F1.8 STM is described as suitable for a wide range of scenes, including portraits, landscapes, and snapshots. Its fixed focal length encourages creative composition, providing a versatile option for various photography styles. The VILTROX 50mm F2, while also versatile, is particularly noted for its effectiveness in portraiture due to its fast aperture and optical design. Both lenses cater to different user preferences, but the Canon lens might appeal more to those who require a multipurpose lens for a variety of shooting scenarios.

Pricing and Value

When it comes to pricing, the Canon RF50mm F1.8 STM Lens retails for $219.00, while the VILTROX 50mm F2 Full Frame Lens is available for $199.00. This makes the VILTROX lens about $20 cheaper, offering a more budget-friendly option. For photographers who are particularly price-sensitive, the VILTROX lens provides a compelling value while still delivering high-quality performance. However, the Canon lens's additional features and compatibility with the EOS R system may justify its higher price for Canon users.

Which should you buy?

Ultimately, the decision between the Canon RF50mm F1.8 STM Lens and the VILTROX 50mm F2 Full Frame Lens will largely depend on your camera system and specific photography needs. If you're using a Canon EOS R series camera, the Canon lens offers excellent compatibility and a large aperture for low-light scenarios, making it a versatile choice. Conversely, if you own a Sony E-mount camera and are looking for a slightly more affordable option with superb optics, the VILTROX lens is an excellent alternative. Both lenses deliver exceptional performance, but your choice should align with your camera system and shooting style.