Canon RF100- vs Sigma
Updated July 2026 — Canon RF100- wins on stabilization and weight, Sigma wins on price.
The Canon RF100-400mm excels in versatility and image quality, while the Sigma 30mm offers great value and low-light performance.
Why Canon RF100- is better
Versatility
Wide zoom range of 100-400mm
Image Quality
Ultra Low Dispersion lens element reduces chromatic aberration
Stabilization
Optical Image Stabilizer with up to 5.5 Stops of shake correction
Why Sigma is better
Price
Approximately 40% cheaper at $419
Low-Light
Large aperture of F1.4 for better low-light performance
Portability
Compact design for easier handling
Overall score
Specifications
| Spec | Canon RF100- | Sigma |
|---|---|---|
| Focal Length | 100-400mm | 30mm |
| Aperture | F5.6-8 | F1.4 |
| Image Stabilization | Yes | No |
| Autofocus | Nano USM | Stepping Motor |
| Compatibility | Canon RF | Sony E |
Dimension comparison
Overview of the Canon RF100-400mm F5.6-8 IS USM and Sigma 30mm F1.4 Contemporary DC DN Lens
The Canon RF100-400mm F5.6-8 IS USM is a versatile telephoto lens priced at $699.00, while the Sigma 30mm F1.4 Contemporary DC DN Lens for Sony E comes in at $419.00, making it about 40% cheaper. The Canon lens is designed for wildlife and sports photography, offering a zoom range that can bring distant subjects closer, whereas the Sigma lens excels in low-light conditions and depth of field effects with its large aperture. Both lenses cater to different types of photographers, which is essential to consider when choosing between them.
Design and Build Quality
Both lenses are designed with portability in mind, but they serve different purposes. The Canon RF100-400mm is compact and lightweight for a telephoto lens, making it suitable for outdoor shooting, while the Sigma 30mm F1.4 is also compact, designed specifically for APS-C mirrorless cameras. The Sigma features a stepping motor for smooth autofocus, which is ideal for both stills and video. The Canon lens, on the other hand, integrates an Optical Image Stabilizer that provides up to 5.5 Stops of shake correction, enhancing its usability in dynamic shooting environments.
Image Quality
When it comes to image quality, the Canon RF100-400mm is designed to deliver high-quality images with minimal chromatic aberration, thanks to its Ultra Low Dispersion lens element. This lens is particularly effective at longer focal lengths, ensuring crisp and colorful images. The Sigma 30mm F1.4 boasts a large aperture of F1.4, which is excellent for low-light scenarios and creates beautiful bokeh, enhancing the overall image aesthetics. Both lenses have a strong focus on delivering superior image quality, but they cater to different photographic needs.
Autofocus Performance
Autofocus performance varies notably between the two lenses. The Canon RF100-400mm incorporates Canon's Nano USM technology, which allows for high-speed, smooth, and quiet focusing, making it suitable for fast-moving subjects like wildlife or sports. In contrast, the Sigma 30mm employs a stepping motor that offers fast and accurate autofocus, particularly beneficial for video work. Both lenses provide efficient focusing, but the Canon lens may have an edge for those shooting dynamic scenes where speed is crucial.
Versatility and Use Cases
The Canon RF100-400mm offers a wide zoom range from 100mm to 400mm, making it incredibly versatile for various shooting scenarios, such as wildlife photography, sports events, and travel. It can also achieve a maximum focal length of 800mm when paired with tele extenders, which significantly expands its usability. Conversely, the Sigma 30mm is more limited in focal length but excels in portraiture, street photography, and general-purpose shooting, particularly in low-light conditions. The choice here heavily depends on the photographer's style and requirements.
Price Comparison
Price is a significant factor when comparing these two lenses. The Canon RF100-400mm is priced at $699.00, while the Sigma 30mm is much more budget-friendly at $419.00. This represents a price difference of about $280, making the Sigma lens approximately 40% cheaper than the Canon. For photographers on a tighter budget or those seeking a prime lens for everyday use, the Sigma offers excellent value without compromising on performance.
Compatibility
Compatibility is another essential aspect to consider. The Canon RF100-400mm is specifically designed for EOS R series cameras, ensuring optimal performance with Canon’s latest mirrorless technology. It also supports RF tele extenders for extended focal lengths, which adds to its versatility. On the other hand, the Sigma 30mm is compatible with Sony E-mount cameras, making it an excellent choice for Sony users looking for a high-quality prime lens. The differences in compatibility mean that your camera system will heavily influence your choice between these two lenses.
Which should you buy?
Ultimately, the decision between the Canon RF100-400mm F5.6-8 IS USM and the Sigma 30mm F1.4 Contemporary DC DN Lens comes down to your specific needs as a photographer. If you require a versatile telephoto lens for capturing distant subjects and you’re willing to invest more, the Canon lens is the right choice. However, if you're looking for a high-quality, budget-friendly prime lens that excels in low-light conditions, the Sigma lens is an excellent option. Each lens has its strengths, making the best choice entirely dependent on your photographic preferences and requirements.

