Canon RF-S18- vs Viltrox
Updated July 2026 — Canon RF-S18- wins on sales rank and stabilization, Viltrox wins on price and weight.
The Canon RF-S18-45mm offers versatility and affordability, while the Viltrox 25mm excels in low-light performance and depth of field control.
Why Canon RF-S18- is better
Price
Canon is $89 cheaper.
Versatility
Canon has a zoom range of 18-45mm.
Weight
Canon is lighter and more compact.
Why Viltrox is better
Aperture
Viltrox has a brighter f/1.7 aperture.
Autofocus
Viltrox supports face and eye recognition.
Build Quality
Viltrox is designed for low-light conditions.
Overall score
Specifications
| Spec | Canon RF-S18- | Viltrox |
|---|---|---|
| Max Aperture | f/4.5-6.3 | f/1.7 |
| Focal Length | 18-45mm | 25mm |
| Image Stabilization | Yes | No |
| Autofocus Type | Dual Pixel CMOS | Stepper Motor |
| Compatibility | APS-C | Sony E |
Dimension comparison
Overview of the Canon RF-S18-45mm F4.5-6.3 Lens
The Canon RF-S18-45mm F4.5-6.3 Lens stands out for its versatility and compact design, ideal for APS-C cameras. Priced at $87.00, it offers an excellent value for those looking for a standard zoom lens. With a sales rank of 604, it's a popular choice among photographers seeking mobility without sacrificing quality.
This lens features a versatile zoom range of 18-45mm, making it suitable for various photography styles, from landscapes to portraits. It incorporates advanced optical technologies, including two aspheric elements and Canon’s Super Spectra Coating, ensuring high image quality and minimizing flare. Furthermore, its optical image stabilization provides up to four stops of shake correction, making it a reliable option for low-light situations.
Overview of the Viltrox 25mm F1.7 E
In contrast, the Viltrox 25mm F1.7 E is a prime lens designed for Sony E mount cameras, priced at $176.00. While it doesn't have a bestseller rank listed, it is tailored for those who prioritize low-light performance and depth of field control. The lens boasts a bright f/1.7 maximum aperture, ideal for creating stunning bokeh effects and sharper images in darker environments.
Weighing only 170g, the Viltrox is lightweight and portable, making it a great companion for travel and everyday use. It utilizes a stepper motor for quiet autofocus, which is valuable for both photography and videography. The lens also supports face and eye recognition, enhancing its usability for portraits and dynamic scenes.
Price Comparison
The Canon RF-S18-45mm is significantly more affordable than the Viltrox 25mm, with a price difference of $89.00, or about 50.3%. This makes the Canon lens a compelling choice for budget-conscious photographers who still want quality and versatility.
In contrast, the Viltrox's higher price reflects its specialized features, particularly for low-light shooting and depth of field control, which may justify the cost for professionals and enthusiasts focused on portraiture and creative photography. The price difference is notable and should be a key consideration when deciding which lens to purchase.
Image Quality
Both lenses deliver excellent image quality, but they cater to different photographic needs. The Canon RF-S18-45mm features Canon's advanced optical technologies, including aspheric elements and Super Spectra Coating, which work together to provide clear and vibrant images with reduced flare. This makes it particularly effective for a wide range of shooting scenarios, from landscapes to casual portraits.
On the other hand, the Viltrox 25mm excels in low-light conditions due to its f/1.7 aperture, allowing for greater light intake and sharper images even in challenging environments. This lens is particularly suited for portrait photographers who wish to create a beautiful bokeh effect with a shallow depth of field. Therefore, while both lenses offer great image quality, the choice largely depends on the specific photography context you plan to use them in.
Autofocus Performance
Autofocus performance is crucial for both amateur and professional photographers. The Canon RF-S18-45mm features Dual Pixel CMOS AF coverage, providing 100% coverage for APS-C sensors, which ensures fast and accurate focusing. This is particularly beneficial for capturing moving subjects or shooting in dynamic environments.
The Viltrox 25mm also boasts a reliable autofocus system powered by a stepper motor, which operates quietly and efficiently. It supports face and eye recognition, making it an excellent choice for portrait photography, where precise focus on the subject's eyes is critical. While both lenses perform well in autofocus, the Canon may have an edge in versatility due to its broader coverage and flexibility in various shooting conditions.
Size and Portability
When it comes to size and portability, the Canon RF-S18-45mm is compact and lightweight, designed specifically for APS-C cameras. Its retractable mechanism allows for easy storage and transport, making it a convenient option for photographers on the go.
The Viltrox 25mm, while also lightweight at 170g, is a fixed focal length lens, which means it may require more lens changes depending on your shooting needs. However, its lightweight design makes it easy to carry around, particularly for travel or everyday use. Both lenses are designed with portability in mind, but the Canon offers more versatility in terms of zoom range.
Use Cases
The Canon RF-S18-45mm is a versatile lens suitable for a variety of situations, including everyday photography, landscapes, and casual portraits. Its zoom range allows photographers to quickly adapt to different compositions without changing lenses. This makes it an ideal choice for those who prefer an all-in-one solution.
In contrast, the Viltrox 25mm is more specialized, excelling in portraiture and low-light environments. Its wide aperture allows for creative depth of field effects, making it a favorite among portrait photographers. Thus, while the Canon lens is perfect for general use, the Viltrox is tailored for more specific artistic applications.
Which should you buy?
Choosing between the Canon RF-S18-45mm F4.5-6.3 Lens and the Viltrox 25mm F1.7 E ultimately depends on your photographic needs and budget. The Canon lens is about 50.3% cheaper at $87.00 and offers a versatile zoom range, making it ideal for everyday use and various photography styles. It excels in providing convenience and quality without breaking the bank.
Conversely, if your focus is on portrait photography and low-light performance, the Viltrox lens, with its f/1.7 aperture and specialized features, may justify its higher price of $176.00. Ultimately, for versatility and affordability, the Canon lens is the better choice, while the Viltrox caters to those seeking depth of field control and low-light capabilities.

