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Canon EF vs Viltrox

Updated July 2026 — Canon EF wins on focal length and build quality, Viltrox wins on price and weight.

The Canon EF 50mm f/1.8 STM Lens offers better value and versatility, while the Viltrox 25mm F1.7 E is tailored for Sony users.

Why Canon EF is better

Price

Canon lens is $169, cheaper than Viltrox at $176.

Weight

Canon lens weighs 5.6 oz, lighter than Viltrox at 6 oz.

Brand Reputation

Canon has a long-standing reputation for quality lenses.

Why Viltrox is better

Aperture

Viltrox has a brighter f/1.7 maximum aperture.

Compatibility

Viltrox is specifically designed for Sony E mount cameras.

Autofocus Features

Viltrox supports face and eye recognition autofocus.

Overall score

Canon EF
88
Viltrox
84

Specifications

SpecCanon EFViltrox
Focal Length50mm25mm
Max Aperturef/1.8f/1.7
AutofocusSTMSTM
CompatibilityCanon EOSSony E
Image QualityExcellentGood

Dimension comparison

Canon EFViltrox

Overview of the Lenses

The Canon EF 50mm f/1.8 STM Lens is priced at $169.00, while the Viltrox 25mm F1.7 E comes in at $176.00. Although the Viltrox lens is slightly more expensive by about 4%, both lenses cater to different photography needs and styles. The Canon lens is celebrated for its versatility and suitability for portraits, while the Viltrox lens is designed specifically for Sony E mount cameras, making it ideal for users of Sony mirrorless systems.

Design and Build Quality

The Canon EF 50mm f/1.8 STM Lens features a compact and lightweight design, which makes it an excellent choice for everyday use. It weighs approximately 5.6 oz, making it easy to carry around for extended periods. On the other hand, the Viltrox 25mm F1.7 E weighs 170g, which translates to about 6 oz. While both lenses are designed for portability, the Canon lens has a slight edge in terms of weight, enhancing its usability for travel and street photography.

Focal Length and Aperture

The Canon EF 50mm f/1.8 STM Lens has a focal length of 50mm with a maximum aperture of f/1.8, providing a natural perspective similar to the human eye. This makes it particularly adept at capturing portraits and low-light scenes. Conversely, the Viltrox 25mm F1.7 E offers a focal length of 25mm with a slightly brighter maximum aperture of f/1.7. While both lenses excel in low-light conditions, the Viltrox lens allows for greater control over depth of field, making it advantageous for creative photography.

Autofocus Performance

In terms of autofocus capabilities, both lenses utilize STM (Stepping Motor) technology, which ensures quiet and efficient focusing. The Canon EF 50mm f/1.8 STM Lens is designed to deliver near-silent, continuous autofocus for movies and smooth AF for stills. Similarly, the Viltrox 25mm F1.7 E also features a stepper motor that provides a quiet autofocus experience, minimizing distractions during photo and video shoots. Both lenses cater to videographers and photographers who require silent and responsive autofocus.

Image Quality and Performance

Canon's EF 50mm f/1.8 STM Lens is well-known for its sharpness and beautiful background blur, thanks to its circular 7-blade design. It excels in various conditions, particularly in low-light scenarios, due to its effective aperture. The Viltrox 25mm F1.7 E is also praised for its bright aperture and image quality, particularly in low-light situations. However, specific performance metrics such as sharpness and color balance are less documented for the Viltrox lens, making it challenging to directly compare to Canon's established reputation.

Compatibility and Use Cases

The Canon EF 50mm f/1.8 STM Lens is primarily designed for Canon's EOS series, making it suitable for users of Canon DSLRs and mirrorless cameras. On the other hand, the Viltrox 25mm F1.7 E is tailored specifically for Sony E mount cameras, including popular models like the a6400 and a6600. This specialization means that users of each brand will find a lens that is optimized for their respective systems, ensuring the best possible performance and compatibility.

Price and Value

The Canon EF 50mm f/1.8 STM Lens is priced at $169.00, while the Viltrox 25mm F1.7 E retails at $176.00. This makes the Canon lens about 4% cheaper than the Viltrox lens. Given the established history and performance of the Canon lens, it often represents greater value, particularly for those who are new to photography or looking for a reliable everyday lens. However, the Viltrox lens offers unique features and compatibility for Sony users, justifying its price for those in the Sony ecosystem.

Which should you buy?

When deciding between the Canon EF 50mm f/1.8 STM Lens and the Viltrox 25mm F1.7 E, consider your camera system and photography style. If you're a Canon user looking for a versatile, lightweight lens that excels in various conditions, the Canon lens is the better choice. However, if you own a Sony mirrorless camera and need a lens with a bright aperture for low-light conditions, the Viltrox lens is worth the extra investment. Ultimately, both lenses offer excellent performance tailored to their specific users.