Canon EF vs SIRUI
Updated July 2026 — Canon EF wins on focal length and min focus, SIRUI wins on price and build.
The Canon EF 50mm f/1.8 STM Lens is an excellent budget-friendly option for photographers, while the SIRUI 20mm T1.8 Anamorphic Lens is ideal for filmmakers seeking cinematic quality.
Why Canon EF is better
Price
Canon lens is significantly cheaper at $169.
Weight
Canon lens is lighter at 5.6 oz.
Versatility
Canon lens is great for portraits and general photography.
Why SIRUI is better
Cinematic Quality
SIRUI lens offers a 1.33x squeeze for cinematic visuals.
Autofocus Features
SIRUI lens has advanced eye-tracking autofocus.
Wide Angle
SIRUI lens has a wider focal length for landscapes.
Overall score
Specifications
| Spec | Canon EF | SIRUI |
|---|---|---|
| Max Aperture | f/1.8 | T1.8 |
| Focal Length | 50mm | 20mm |
| Autofocus | STM | STM with Eye Tracking |
| Image Circle | Full Frame | Super 35 |
| Weight | 5.6 oz | 1.06 lb |
Dimension comparison
Overview of the Canon EF 50mm f/1.8 STM Lens and SIRUI 20mm T1.8 Anamorphic Lens
The Canon EF 50mm f/1.8 STM Lens and the SIRUI 20mm T1.8 Anamorphic Lens serve different photographic needs, appealing to distinct user bases. The Canon lens is priced at $169.00, while the SIRUI lens is significantly more expensive at $599.00. This price difference of about 253% reflects the varying features and intended uses of each lens.
The Canon EF 50mm f/1.8 STM Lens is a compact prime lens known for its versatility in portraits, action shots, and low-light conditions. In contrast, the SIRUI 20mm T1.8 lens is an anamorphic lens designed for cinematic video production, offering a unique perspective with its 1.33x squeeze factor.
Design and Build Quality
In terms of design, the Canon EF 50mm f/1.8 STM Lens is lightweight and compact, making it an ideal choice for everyday use. Weighing approximately 5.6 oz, it is easy to carry, allowing photographers to have it on hand for spontaneous shooting opportunities. The SIRUI 20mm T1.8, on the other hand, weighs 1.06 lb (480g) and is designed with a more robust build to accommodate the demands of filmmaking.
While both lenses feature advanced motor technology for focusing, the Canon lens utilizes a stepping motor (STM) for near-silent autofocus, making it suitable for both stills and video. The SIRUI lens, equipped with a precision STM stepping motor as well, emphasizes smooth and quiet autofocus, critical for video creators.
Focal Length and Aperture
The Canon EF 50mm f/1.8 STM Lens has a focal length of 50mm, which provides an effective focal length of 80mm on APS-C cameras. This makes it an excellent choice for portrait photography. Its maximum aperture of f/1.8 allows for significant light entry, enhancing low-light performance and providing beautiful background blur.
Conversely, the SIRUI 20mm T1.8 lens features a wider focal length of 20mm, equivalent to 22mm on full-frame cameras. This makes it well-suited for capturing expansive landscapes and tight indoor spaces. The ultra-fast T1.8 aperture also enhances its low-light capabilities, allowing filmmakers to shoot without raising ISO levels excessively.
Image Quality and Performance
When it comes to image quality, the Canon EF 50mm f/1.8 STM Lens is recognized for its sharp performance and color balance, aided by its 6-element design. It effectively minimizes ghosting and flare, ensuring that images remain crisp and vibrant. The lens also boasts a minimum focusing distance of 1.15 feet, allowing for close-up shots with decent magnification.
The SIRUI 20mm T1.8 lens excels in producing cinematic visuals, thanks to its 1.33x squeeze factor, which delivers a wider aspect ratio of 2.35:1 without cropping. This feature is particularly appealing to videographers who aim for a cinematic look. The lens is optimized for APS-C sensors and provides excellent clarity and coverage, making it a solid choice for filmmakers.
Target Audience
The Canon EF 50mm f/1.8 STM Lens is primarily aimed at amateur photographers and enthusiasts looking for a reliable, budget-friendly option for portrait and general photography. Its versatility and compact size make it suitable for various shooting scenarios, from casual outings to more formal portrait sessions.
The SIRUI 20mm T1.8, however, targets a more specialized audience, particularly filmmakers and video creators who require high-quality gear to achieve cinematic effects. Its features cater to those seeking a professional-grade lens that enhances the storytelling aspect of their projects.
Price Comparison
The price disparity between the two lenses is substantial. The Canon EF 50mm f/1.8 STM Lens retails for $169.00, making it an accessible option for many users. In comparison, the SIRUI 20mm T1.8 lens is priced at $599.00, indicating a clear investment for those serious about video production. This 253% price difference reflects not only the lens features but also the target markets they serve.
Availability and Market Trends
Both lenses are readily available through major retailers and online platforms, indicating their popularity among their respective target audiences. The Canon EF 50mm f/1.8 STM Lens has established itself as a staple in the photography community, often recommended as an essential addition to any photographer’s kit. The SIRUI 20mm T1.8, while newer and more niche, is gaining traction among independent filmmakers and professionals seeking to enhance their cinematography.
Which should you buy?
Choosing between the Canon EF 50mm f/1.8 STM Lens and the SIRUI 20mm T1.8 Anamorphic Lens ultimately depends on your specific needs. If you’re a photographer looking for an affordable, versatile lens for everyday use, the Canon EF 50mm f/1.8 is an excellent choice at $169.00. However, if your focus is on video production and you require an anamorphic lens to achieve cinematic visuals, the SIRUI 20mm T1.8 is worth the investment at $599.00.

