Sigma 10- vs Canon RF75-
Updated July 2026 — Sigma 10- wins on aperture and build, Canon RF75- wins on zoom range and portability.
The Sigma 10-18mm F2.8 DC DN excels in image quality and low-light performance, while the Canon RF75-300mm F4-5.6 offers versatility and affordability.
Why Sigma 10- is better
Image Quality
Superior low-light performance and wide aperture.
Specialization
Designed specifically for landscape and creative photography.
Build Quality
High-quality construction for demanding use.
Why Canon RF75- is better
Price
Significantly more affordable option.
Portability
Compact and lightweight design for easy carrying.
Versatility
Wide focal length range for various photography styles.
Overall score
Specifications
| Spec | Sigma 10- | Canon RF75- |
|---|---|---|
| Focal Length | 10-18mm | 75-300mm |
| Aperture | F2.8 | F4-5.6 |
| Compatibility | Sony E | Canon RF |
| Accessories | None | Included kit |
| Focus Type | Auto | Eye Detection |
Dimension comparison
Overview of the Sigma 10-18mm F2.8 DC DN and Canon RF75-300mm F4-5.6 Zoom Lens
The Sigma 10-18mm F2.8 DC DN is designed for landscape and content creators, while the Canon RF75-300mm F4-5.6 Zoom Lens caters to photographers needing a versatile long-range option. The Sigma lens, priced at $679.00, offers a wide aperture ideal for low light and creative photography. In contrast, the Canon lens comes in at $239.00, making it about 65% cheaper than the Sigma. This significant price difference can influence your choice depending on your budget and specific photographic needs.
Design and Portability
When it comes to design, the Canon RF75-300mm F4-5.6 Zoom Lens is compact and lightweight, making it portable and easy to carry—similar to the weight of a 500ml water bottle. This portability can be a crucial factor for travel photographers or those who need to carry their gear for extended periods. On the other hand, while the Sigma 10-18mm F2.8 DC DN is also designed to be light and small for an ultra-wide-angle zoom lens, it is inherently larger than the Canon due to its wide-angle capabilities. If portability is a top priority, the Canon lens may have the upper hand.
Image Quality and Versatility
The Sigma lens is praised for its large aperture and ultra-wide-angle capabilities, which allow for expressive imaging, making it a strong choice for landscapes and creative shots. This lens excels in producing high-quality images across various lighting conditions. Conversely, the Canon RF75-300mm offers a focal length range that can dramatically change the feel of your photos, allowing for versatility in capturing everything from distant wildlife to portraits. While both lenses provide unique advantages, the Sigma is specialized for specific types of photography, whereas the Canon lens is more versatile across different scenarios.
Autofocus and Performance
The autofocus capabilities of the Canon RF75-300mm are particularly impressive, featuring Eye Detection technology that works effectively even at the maximum zoom of 300mm. This feature is beneficial for capturing moving subjects, especially in video. The Sigma 10-18mm F2.8 DC DN, while it may not emphasize autofocus features in its description, is designed for quick and responsive focusing suited for video and dynamic shooting situations. If autofocus performance is paramount for your photography, the Canon lens has a clear advantage with its advanced features.
Intended Use and Target Audience
The Sigma 10-18mm F2.8 DC DN is tailored for landscape photographers, travel enthusiasts, and content creators who demand high-quality imagery in a compact format. Its features are geared towards those who often shoot in varied lighting conditions and require a lens that can perform under pressure. In contrast, the Canon RF75-300mm F4-5.6 is aimed at a broader audience, including casual photographers who want a lightweight option that can handle a variety of shooting scenarios without breaking the bank. Your choice may hinge on whether you prioritize specialized performance or versatility.
Accessories and Added Value
The Canon RF75-300mm comes with several accessories, including a UV filter, lens cap keeper, and a cleaning kit. These additions enhance the value of the purchase, ensuring you have essential tools to maintain your lens and improve your shooting experience. On the other hand, the Sigma 10-18mm F2.8 DC DN does not mention any bundled accessories, which could be a factor when considering overall value. The inclusion of accessories with the Canon lens may make it a more appealing option for beginners or those looking to enhance their photography kit without extra spending.
Pricing and Value Proposition
At $679.00, the Sigma 10-18mm F2.8 DC DN is positioned as a premium lens, aimed at serious photographers who require high performance in challenging conditions. The Canon RF75-300mm, priced at $239.00, represents a more budget-friendly option without sacrificing essential features. The substantial price difference—about 65%—can significantly affect your decision, especially if you are a hobbyist or just starting. If budget constraints are a significant consideration, the Canon lens offers a compelling value proposition.
Which should you buy?
Choosing between the Sigma 10-18mm F2.8 DC DN and the Canon RF75-300mm F4-5.6 Zoom Lens ultimately depends on your specific needs and budget. If you are focused on landscape photography or need a lens for creative content creation, the Sigma offers excellent image quality and performance. However, if you require a versatile, lightweight lens suitable for various photography styles and prefer a more affordable option, the Canon lens is a smart choice. The decision should align with your photography goals, whether they lean towards specialized ultra-wide shots or general versatility at a lower price point.

