vsversusfinder

Canon RF 24- vs Sigma 18-

Updated July 2026 — Canon RF 24- wins on stabilization and versatility, Sigma 18- wins on size and optical quality.

The Canon RF 24-105mm lens offers greater versatility and value, while the Sigma excels in optical quality.

Why Canon RF 24- is better

Price

Canon is $110 cheaper than Sigma.

Versatility

Canon covers a wider focal range.

User-Friendly

Canon has a dedicated macro focus position.

Why Sigma 18- is better

Optical Quality

Sigma offers superior optical performance.

Constant Aperture

Sigma maintains F2.8 throughout its zoom range.

Compactness

Sigma is designed for portability.

Overall score

Canon RF 24-
85
Sigma 18-
78

Specifications

SpecCanon RF 24-Sigma 18-
Focal Length24-105mm18-50mm
Aperturef/4-7.1f/2.8
Image StabilizationYesNo
AutofocusSTMFast
Macro FocusYesNo

Dimension comparison

Canon RF 24-Sigma 18-

Overview of the Canon RF 24-105mm f/4-7.1 IS STM Lens

The Canon RF 24-105mm f/4-7.1 IS STM Lens is designed for versatility, making it an ideal choice for various photography styles. Priced at $476.95, it offers a considerable zoom range that covers wide-angle to short-telephoto perspectives, making it great for travel and everyday photography. This lens features a built-in Optical Image Stabilizer that provides up to five stops of correction, significantly reducing camera shake in low-light conditions and enhancing video stability. Additionally, the STM motor ensures smooth and quiet autofocus, which is beneficial for both stills and video shooting.

Overview of the Sigma 18-50mm F2.8 DC DN Contemporary

The Sigma 18-50mm F2.8 DC DN Contemporary lens is priced at $587.00, making it about 23% more expensive than the Canon lens. This lens is designed specifically for Sony E-mount cameras and offers a constant aperture of F2.8 across its zoom range, allowing for excellent low-light performance and depth of field control. The compact design of the Sigma lens makes it easy to carry, while its advanced optical performance ensures sharp images with minimal distortion. Overall, this lens combines portability with high-quality optics, making it suitable for various photography applications.

Build Quality and Design

The Canon RF 24-105mm lens boasts a compact and lightweight design, making it easy to transport for extended periods. The inclusion of a dedicated Center Macro Focus position allows for close-up shooting, adding to its versatility. In contrast, the Sigma 18-50mm lens, while also compact, is particularly noted for its superb optical quality, featuring the latest technology for enhanced image clarity. Both lenses are built to withstand regular use, but the Canon's design specifically caters to everyday photography needs, making it slightly more user-friendly for casual shooters.

Optical Performance

Optical performance is a strong suit for both lenses. The Canon RF 24-105mm lens benefits from its Optical Image Stabilizer, which helps in capturing sharp images even in challenging lighting conditions. The variable maximum aperture allows for a balance between depth of field and exposure control. On the other hand, the Sigma 18-50mm lens is known for its superb optical quality, which includes in-camera aberration correction. This feature makes the Sigma particularly appealing for photographers who prioritize image quality and clarity, especially in varied shooting environments.

Autofocus Capabilities

Autofocus performance is crucial for both still photography and video. The Canon RF 24-105mm f/4-7.1 IS STM lens utilizes a smooth and quiet STM motor, which ensures that focus transitions are natural and unobtrusive, making it suitable for video recording. Additionally, it offers full-time manual focus override for more control. The Sigma 18-50mm lens, while not detailed in its autofocus system, is designed to provide fast and accurate focusing, ensuring that users can capture fleeting moments effectively. Both lenses are designed to cater to the needs of hybrid content creators.

Versatility in Use

The Canon RF 24-105mm lens excels in versatility, covering a wide range of subjects from landscapes to portraits without needing to switch lenses. Its flexible zoom range makes it an excellent option for travel photographers who want to minimize gear. The Sigma 18-50mm lens, while offering a more limited focal range, compensates with its constant F2.8 aperture, making it suitable for low-light situations and creative depth of field effects. Each lens serves different use cases, with the Canon being more versatile and the Sigma excelling in specific shooting conditions.

Price Comparison

At $476.95, the Canon RF 24-105mm lens is more budget-friendly compared to the Sigma 18-50mm, which is priced at $587.00. This price difference of about $110 highlights the Canon lens as a more accessible option for photographers looking for a versatile everyday lens. While the Sigma offers advanced optical performance, the higher price point may make it less appealing to casual users or those on a tighter budget. Ultimately, the choice may come down to whether users value the additional optical quality or the versatility of the Canon lens.

Which should you buy?

When deciding between the Canon RF 24-105mm f/4-7.1 IS STM Lens and the Sigma 18-50mm F2.8 DC DN Contemporary, consider your specific needs. The Canon lens stands out for its versatility and user-friendly design, making it ideal for everyday photography and travel. In contrast, the Sigma lens offers superior optical quality and a constant aperture, making it a great choice for those focused on image quality in various lighting conditions. Ultimately, if you need a more adaptable lens at a lower cost, the Canon would be your best bet. However, if you prioritize optical performance and are willing to invest more, the Sigma could be the right choice for you.