Canon RF 24- vs Sigma 28-
Updated July 2026 — Canon RF 24- leads on price and weight.
The Canon RF 24-105mm offers greater versatility and advanced features, while the Sigma 28-70mm excels in affordability and low-light performance.
Why Canon RF 24- is better
Zoom Range
Canon offers a broader focal length of 24-105mm.
Features
Canon includes Optical Image Stabilization and a control ring.
Build Quality
Canon is part of the professional-grade L-Series.
Why Sigma 28- is better
Price
Sigma is significantly more affordable at $859.95.
Weight
Sigma is lightweight and compact for everyday use.
Aperture
Sigma has a larger f/2.8 aperture for low-light shooting.
Overall score
Specifications
| Spec | Canon RF 24- | Sigma 28- |
|---|---|---|
| Focal Length | 24-105mm | 28-70mm |
| Max Aperture | f/4 | f/2.8 |
| Image Stabilization | Yes | No |
| Control Ring | Yes | No |
| Weight | 700g | 430g |
Dimension comparison
Overview of the Canon RF 24-105mm and Sigma 28-70mm
The Canon RF 24-105mm f/4L is USM Zoom Lens is priced at $1,399.00, while the Sigma 28-70mm F2.8 DG DN for Sony E is available for about $859.95. This represents a significant price difference of roughly 39% in favor of the Sigma lens. Both lenses cater to different photography needs, with the Canon offering a broader focal range and the Sigma emphasizing a large aperture for low-light performance.
Design and Build Quality
The Canon RF 24-105mm boasts a compact design and is built for the EOS R system, while the Sigma 28-70mm is noted for its superb build quality and lightweight construction. The Canon lens includes a control ring for easy adjustments and features a bright, constant f/4.0 aperture across its zoom range. In contrast, the Sigma lens emphasizes portability without sacrificing performance, making it ideal for everyday use. Both lenses are designed with durability in mind, with the Canon lens being part of the L-Series, known for its professional-grade quality.
Optical Performance
In terms of optical performance, the Canon RF 24-105mm benefits from a five-stop-effective image stabilizer that minimizes camera shake, making it suitable for handheld shooting in various conditions. On the other hand, the Sigma 28-70mm F2.8 DG DN is designed based on the acclaimed 24-70mm F2.8 DG DN | Art lens, ensuring outstanding image quality throughout its zoom range. The Sigma's wide f/2.8 aperture allows for excellent low-light performance, making it a strong competitor in this category.
Zoom Range and Versatility
When considering zoom range, the Canon RF 24-105mm offers a more extensive focal length of 24-105mm, making it incredibly versatile for a variety of shooting situations, from wide-angle landscapes to portraiture. Conversely, the Sigma 28-70mm provides a shorter zoom range, but its f/2.8 aperture allows for creative depth-of-field effects that can be particularly appealing in portrait photography. Each lens caters to different shooting styles, with the Canon focusing on broader versatility and the Sigma on low-light capabilities and bokeh.
Features and Usability
The Canon RF 24-105mm includes advanced features like Optical Image Stabilization and a control ring for direct adjustments, enhancing usability for photographers who require quick changes in settings. The Sigma 28-70mm, while lacking some of these advanced features, comes equipped with a focus mode switch and Nano Porous Coating, which helps reduce flare and ghosting. Both lenses are designed for ease of use, but the Canon's additional features may cater to more demanding photography situations.
Price Consideration
The Sigma 28-70mm is significantly more affordable at $859.95 compared to the Canon RF 24-105mm, which is priced at $1,399.00. This price difference of about $539 makes the Sigma an attractive option for budget-conscious photographers who still want high optical quality. With the Sigma also showing an average price of $778.11 over the past 90 days, it offers consistent value without sacrificing performance.
Target Audience
The Canon RF 24-105mm is ideal for professional photographers and enthusiasts who need a reliable all-in-one lens for various scenarios. Its broad zoom range and advanced features align well with users who require versatility and high-end performance. In contrast, the Sigma 28-70mm is geared towards photographers who prioritize portability and large aperture capabilities, making it an excellent choice for those focused on street, event, or portrait photography.
Which should you buy?
Ultimately, the choice between the Canon RF 24-105mm f/4L and the Sigma 28-70mm F2.8 DG DN rests on your specific needs and budget. If you require a versatile lens with a broader focal range and advanced features for varied shooting conditions, the Canon RF 24-105mm is the better option, albeit at a higher price. However, if you are looking for a more affordable lens with excellent low-light performance and a lightweight design, the Sigma 28-70mm is an impressive choice that delivers high-quality results without breaking the bank.

