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Canon EF vs SIRUI

Updated July 2026 — Canon EF wins on price, SIRUI wins on weight and autofocus.

The Canon EF 50mm f/1.8 STM Lens is a budget-friendly option for general photography, while the SIRUI 20mm T1.8 Anamorphic Lens offers advanced features for filmmakers.

Why Canon EF is better

Price

Canon lens is significantly cheaper.

Weight

Canon lens is lighter and more portable.

Focal Length

Canon lens is versatile for portraits.

Why SIRUI is better

Cinematic Quality

SIRUI lens offers anamorphic features.

Autofocus

SIRUI lens has advanced eye-tracking autofocus.

Wide Angle

SIRUI lens provides a wider perspective.

Overall score

Canon EF
75
SIRUI
90

Specifications

SpecCanon EFSIRUI
Focal Length50mm20mm
Max Aperturef/1.8T1.8
Min Focus Dist.1.15 ftN/A
Weight160g480g
CoatingSuper SpectraN/A

Dimension comparison

Canon EFSIRUI

Introduction to the Lens Showdown

In the world of photography and videography, the choice of lens can significantly affect the final outcome of your work. Today, we compare two distinct options: the Canon EF 50mm f/1.8 STM Lens and the SIRUI 20mm T1.8 1.33X Anamorphic Lens. Each lens brings unique features and price points, making them suitable for different types of users and shooting environments.

Price Comparison

The Canon EF 50mm f/1.8 STM Lens is priced at $155.99, while the SIRUI 20mm T1.8 Anamorphic Lens comes in at $599.00. This places the SIRUI lens at about 284% higher than the Canon lens, highlighting a significant price difference. If budget is a primary concern, the Canon lens is an appealing option, offering a well-rounded performance for a fraction of the cost. However, the SIRUI lens, while more expensive, caters to those looking for specific features that justify the price point.

Focal Length and Aperture

The Canon EF 50mm f/1.8 STM Lens has a focal length of 50mm with a maximum aperture of f/1.8. This configuration makes it exceptionally versatile for portraits, action shots, and low-light photography. In contrast, the SIRUI 20mm T1.8 Anamorphic Lens features a 20mm focal length which is ideal for wide-angle shots, offering a cinematic perspective. With a T1.8 aperture, it allows more light to enter, improving low-light performance and providing excellent depth of field control. Depending on your shooting needs, one lens will clearly stand out over the other.

Autofocus Capabilities

When it comes to autofocus, the Canon lens employs a stepping motor (STM) for near-silent, continuous autofocus, making it suitable for both stills and movies. The SIRUI lens also features an STM motor and adds eye-tracking capabilities, offering professional filmmakers more precise control over focus. While both lenses are equipped for smooth autofocus, the SIRUI's advanced capabilities may be particularly advantageous for videographers who require more creative control during their shoots.

Minimum Focusing Distance

The Canon EF 50mm f/1.8 STM Lens boasts a minimum focusing distance of 1.15 feet (0.35m), allowing you to get reasonably close to your subjects for detailed shots. However, the SIRUI 20mm T1.8 lens does not specify a minimum focusing distance in the available data. This could suggest a focus on broader scenes rather than intimate close-ups. If close focusing is essential for your photography, the Canon lens may be the better choice.

Image Quality and Coating

Image quality is paramount in photography, and both lenses are designed to minimize drawbacks associated with their respective focal lengths. The Canon lens features Super Spectra coating, which helps reduce flare and ghosting, resulting in greater contrast and color accuracy. The SIRUI lens, designed for Super 35 sensors, promises excellent coverage and image clarity, with a 1.33x squeeze factor that enhances the cinematic experience. Photographers and filmmakers focusing on image quality will find both options compelling, but the specific choice will depend on the type of visuals they aim to create.

Weight and Portability

The Canon EF 50mm f/1.8 STM Lens is compact and lightweight, making it an excellent choice for everyday shooting and portability. On the other hand, the SIRUI 20mm T1.8 lens weighs 480g (1.06lb), which is still manageable for most workflows but may be bulkier depending on the setup. If you prioritize a lightweight setup for travel or street photography, the Canon lens is likely the better option. However, for cinematic work where quality takes precedence, the SIRUI lens's weight may not be a significant drawback.

Target Audience

The Canon EF 50mm f/1.8 STM Lens caters primarily to enthusiasts and casual photographers who require a reliable and versatile lens for various shooting scenarios. Its lower price and broad applicability make it an excellent entry point into prime lenses. In contrast, the SIRUI 20mm T1.8 lens targets professionals and serious videographers who demand high-quality cinematic results. The advanced features, such as the anamorphic design and autofocus capabilities, make it particularly appealing for those focused on filmmaking.

Which should you buy?

The decision between the Canon EF 50mm f/1.8 STM Lens and the SIRUI 20mm T1.8 1.33X Anamorphic Lens ultimately hinges on your specific needs and budget. If you're an amateur or enthusiast looking for a versatile lens that performs well in various situations, the Canon lens at $155.99 is a strong choice. However, if you are a professional filmmaker seeking to create cinematic visuals with a wide-angle perspective, the SIRUI lens, priced at $599.00, will provide the specialized features necessary for your craft. Consider your shooting style, budget, and the specific features that matter most to you when making your selection.