Sigma 16- vs Canon RF45mm F1.2 STM
Updated July 2026 — Sigma 16- wins on focal length and price, Canon RF45mm F1.2 STM wins on build quality.
The Sigma lens offers versatility with its zoom range, while the Canon lens excels in low-light performance and bokeh quality.
Why Sigma 16- is better
Zoom Range
Sigma offers a versatile 16-300mm zoom range.
Versatility
Sigma is suitable for various shooting scenarios.
Price
Sigma provides a broader range for a higher price.
Why Canon RF45mm F1.2 STM is better
Low-Light
Canon's f/1.2 aperture excels in low-light conditions.
Bokeh Quality
Canon creates stunning bokeh for portraits.
Compact Design
Canon is lightweight and portable for street photography.
Overall score
Specifications
| Spec | Sigma 16- | Canon RF45mm F1.2 STM |
|---|---|---|
| Max Aperture | f/6.7 | f/1.2 |
| Focal Length | 16-300mm | 45mm |
| Weight | 600g | 500g |
| Price | $694.00 | $469.00 |
| Bokeh | Standard | Excellent |
Dimension comparison
Overview of the Sigma 16-300mm F3.5-6.7 DC OS
The Sigma 16-300mm F3.5-6.7 DC OS lens is a versatile option for photographers seeking a wide zoom range. Priced at $694.00, it provides a broad focal length that can accommodate various shooting scenarios, from landscapes to portraits. This lens is designed for those who prefer flexibility in their photography, allowing for quick adjustments without needing to switch lenses.
The 16-300mm lens stands out with its contemporary design, making it a great option for both amateur and professional photographers. Its zoom capabilities can capture everything from wide angles to detailed close-ups, making it a practical choice for travel and everyday photography. As a result, this lens is a strong contender for versatility in the field.
Overview of the Canon RF45mm F1.2 STM
The Canon RF45mm F1.2 STM lens is a prime lens that excels in low-light conditions, priced at $469.00. It features a fast f/1.2 aperture, allowing for superior depth of field effects and soft bokeh, which can enhance portrait photography and creative shots. This lens is particularly appealing for creators who aim for high-quality imagery with a three-dimensional look.
With its compact design and large-diameter mount, the RF45mm lens offers exceptional performance for various photography styles, including lifestyle and narrative content. Its capability to isolate subjects from the background makes it an excellent choice for those aiming to elevate their visual storytelling. Overall, the Canon RF45mm is a prime option for photographers looking for quality and affordability.
Price Comparison
When comparing the prices of these two lenses, the Canon RF45mm F1.2 STM is about 32% cheaper at $469.00 compared to the Sigma 16-300mm F3.5-6.7 DC OS, which is priced at $694.00. This significant price difference may make the Canon lens a more appealing choice for those on a budget or for those looking to invest in a high-quality prime lens without breaking the bank.
While the Sigma lens offers versatility with its zoom range, the price point of the Canon lens allows photographers to access premium features without a hefty investment. Therefore, the cost-effectiveness of the RF45mm may influence purchasing decisions, particularly among hobbyists and those new to photography.
Versatility in Focal Length
The Sigma 16-300mm lens shines in versatility due to its extensive focal length range, from wide-angle 16mm to telephoto 300mm. This expansive range enables photographers to capture a wide variety of scenes without needing multiple lenses. Whether shooting landscapes or wildlife, the Sigma lens can adapt to different conditions and subjects effectively.
In contrast, the Canon RF45mm lens, with its fixed 45mm focal length, focuses on delivering exceptional quality rather than versatility. This prime lens is ideal for portraits and general photography, providing stunning images with a beautiful bokeh effect thanks to its wide aperture. While the RF45mm may not offer the same range as the Sigma, it excels in specific shooting scenarios, making it a great choice for dedicated portrait or lifestyle photographers.
Low-Light Performance
Low-light photography is where the Canon RF45mm F1.2 STM truly excels, thanks to its f/1.2 aperture. This wide aperture allows for faster shutter speeds and better performance in darker environments, making it an excellent choice for evening or indoor photography. The ability to achieve a three-dimensional look with soft bokeh enhances the quality of images captured in low-light situations.
On the other hand, the Sigma 16-300mm lens, while versatile, has a maximum aperture of f/6.7 at its longest focal length. This limited aperture may restrict its performance in low-light conditions compared to the Canon lens. Therefore, for photographers who often find themselves shooting in challenging lighting, the RF45mm provides a distinct advantage.
Build and Design Quality
Both lenses feature high-quality designs, but they cater to different needs. The Sigma 16-300mm lens is designed for versatility, resulting in a slightly bulkier build. It is suitable for photographers who require a lens that can handle various situations without changing equipment frequently.
Conversely, the Canon RF45mm lens is compact and lightweight, making it easy to carry around for extended periods. Its design focuses on providing high-quality imaging while remaining user-friendly, especially for those capturing on-the-go content. The compactness of the RF45mm makes it an attractive option for street photographers and those who prioritize portability.
Intended Use Cases
The Sigma 16-300mm lens is ideal for photographers seeking an all-in-one solution for diverse shooting scenarios. Its zoom range allows for capturing everything from vast landscapes to close-up details, making it an excellent companion for travel photography or outdoor adventures. This lens is suitable for those who want flexibility without the need for multiple lenses.
On the other hand, the Canon RF45mm lens is tailored for more specific use cases, particularly portraiture and creative photography. With its wide aperture and ability to create stunning bokeh, it's perfect for those looking to isolate subjects and achieve a professional look in their images. Photographers focusing on storytelling and lifestyle content will find this lens particularly beneficial.
Which should you buy?
In conclusion, the choice between the Sigma 16-300mm F3.5-6.7 DC OS and the Canon RF45mm F1.2 STM ultimately boils down to individual needs and preferences. If versatility and a broad focal length range are your priorities, the Sigma lens offers a compelling option despite its higher price of $694.00. However, if you are focused on superior low-light performance, beautiful bokeh, and a more budget-friendly price of $469.00, the Canon RF45mm lens stands out as an excellent choice. Consider your photography style and requirements before making a decision, as each lens serves distinct purposes.

