Canon RF14- vs SIRUI
Updated July 2026 — Canon RF14- leads on price and close focus.
The Canon RF14-35mm F4 L is USM Lens offers superior versatility and image quality, while the SIRUI 20mm T1.8 Anamorphic Lens is a budget-friendly option for filmmakers.
Why Canon RF14- is better
Image Quality
Canon lens has advanced optical construction.
Versatility
Canon lens covers a wider focal range.
Build Quality
Canon lens features L-series construction.
Why SIRUI is better
Price
SIRUI lens is significantly cheaper.
Weight
SIRUI lens is lighter.
Cinematic Features
SIRUI lens offers anamorphic design.
Overall score
Specifications
| Spec | Canon RF14- | SIRUI |
|---|---|---|
| Max Aperture | f/4 | T1.8 |
| Focal Length | 14-35mm | 20mm |
| Autofocus | Yes | Yes |
| Image Stabilization | Yes | No |
| Sensor Coverage | Full Frame | Super 35 |
Dimension comparison
Overview of the Canon RF14-35mm F4 L is USM Lens
The Canon RF14-35mm F4 L is USM Lens is a versatile wide-angle zoom lens priced at $1,398.95. It is compatible with EOS R series mirrorless cameras, making it an excellent choice for both photography and videography enthusiasts. The lens offers a constant f/4 maximum aperture, which ensures consistent performance across its zoom range, allowing for creative possibilities in various shooting conditions.
At 14mm, this lens provides ultra wide-angle coverage ideal for landscapes, architecture, or vlogging. Its compact design, weighing approximately 1.2 lbs, enhances portability, while the close-focusing capability down to 7.9 inches enables detailed close-up shots. This lens is a prime candidate for anyone looking to capture expansive scenes with high-quality optics.
Overview of the SIRUI 20mm T1.8 Anamorphic Lens
The SIRUI 20mm T1.8 Anamorphic Lens is priced at $599.00, making it significantly more affordable than the Canon lens, approximately 57% cheaper. This lens is specifically designed for E-mount cameras and offers a unique 1.33x squeeze factor, providing an immersive cinematic view with a 2.35:1 widescreen ratio in 16:9 mode.
It is tailored for independent filmmakers and content creators, featuring selectable manual and autofocus capabilities powered by a precision STM stepping motor. The lens covers Super 35 sensors and boasts an ultra-fast T1.8 aperture, allowing for excellent low-light performance and a beautiful bokeh effect. Weighing just 1.06 lbs, it’s compact and ideal for handheld shooting, making it a valuable tool for both amateur and professional videography.
Image Quality Comparison
When it comes to image quality, the Canon RF14-35mm F4 L is USM Lens excels with its L-series optical construction and advanced lens coating technologies. These features minimize ghosting and ensure high image quality across the zoom range. The lens maintains its performance at a constant f/4 maximum aperture, which is beneficial for capturing sharp images in various lighting situations.
On the other hand, the SIRUI 20mm T1.8 Anamorphic Lens, with its T1.8 aperture, allows more light to enter, enhancing clarity in low-light conditions. The unique anamorphic design creates a distinct cinematic look, but it may not match the detail and sharpness offered by the Canon lens across all focal lengths. Each lens serves a different purpose: the Canon lens is ideal for general photography, while the SIRUI lens shines in cinematic applications.
Versatility and Use Cases
The Canon RF14-35mm F4 L is USM Lens is incredibly versatile, covering a wide focal range from 14mm to 35mm. This makes it suitable for a variety of scenarios, including landscape photography, architecture, and even vlogging. Its close-focusing capability adds to its versatility, allowing for creative shots that require proximity to the subject.
Conversely, the SIRUI 20mm T1.8 Anamorphic Lens is more specialized, focusing on the needs of filmmakers. Its 20mm focal length offers a unique perspective that’s great for capturing expansive landscapes and tight indoor spaces. The lens’s ability to create a cinematic look with its anamorphic design makes it particularly appealing for video projects, but it may not be as adaptable for still photography.
Portability and Design
In terms of design and portability, the Canon RF14-35mm F4 L is USM Lens weighs about 1.2 lbs, making it relatively lightweight for a wide-angle zoom lens. This compactness allows photographers to carry it easily during shoots without compromising on quality.
The SIRUI 20mm T1.8 Anamorphic Lens is even lighter at just 1.06 lbs, which is a significant advantage for videographers who need to move quickly or use handheld rigs. Its compact design is a major selling point for creators who prioritize mobility and ease of use during shooting sessions.
Autofocus Capabilities
The Canon RF14-35mm F4 L is USM Lens benefits from Canon’s advanced autofocus technology, providing fast and reliable focusing, which is essential for both stills and video. The lens also offers impressive image stabilization, with up to 5.5 stops of shake correction, ensuring sharp images even at slower shutter speeds.
In contrast, the SIRUI 20mm T1.8 Anamorphic Lens features a precision STM stepping motor for smooth and quiet autofocus, tailored for video applications. It also includes eye-tracking capabilities and an AF/MF switch, giving filmmakers precise control over focus. While both lenses offer autofocus, the SIRUI lens’s features are specifically designed to meet the demands of cinematographers.
Price and Value
The Canon RF14-35mm F4 L is USM Lens is priced at $1,398.95, reflecting its high-quality construction and versatile capabilities. The price point aligns with its professional-grade features, making it a worthy investment for serious photographers and videographers looking for a reliable wide-angle zoom lens.
In contrast, the SIRUI 20mm T1.8 Anamorphic Lens is priced at $599.00, making it a more accessible option for those entering the world of cinematography or looking for specialized lenses without breaking the bank. The significant price difference of about $799.95 highlights the varying target audiences of these two lenses, with the SIRUI lens catering primarily to budget-conscious content creators.
Which should you buy?
Choosing between the Canon RF14-35mm F4 L is USM Lens and the SIRUI 20mm T1.8 Anamorphic Lens ultimately depends on your specific needs. If you're a photographer or a versatile videographer seeking high-quality images across a wide range of scenarios, the Canon lens is an excellent choice, despite its higher price.
However, if you're a filmmaker focused on creating cinematic visuals with a budget-friendly option, the SIRUI lens’s unique features and lower price make it a compelling option. Each lens excels in its respective domain, so consider your primary use to make the best decision.

