SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF

SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF Summary

The SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF is a manual-focus anamorphic cinema prime for full-frame video production. Using a 1.6x squeeze factor, it delivers wide CinemaScope-style aspect ratios with pronounced anamorphic character, including oval bokeh, strong background compression, and classic blue flare rendering.

Designed for filmmakers working in controlled production environments, the Venus 50mm combines a natural perspective with a horizontally wider field of view, which is equivalent to approximately 31mm. This makes it suitable for narratives, portraits, and subject-driven shots where depth and separation are central to the visual style. Full-frame coverage provides flexibility for reframing and cropping in post without losing resolution or image quality.

This is a traditional cine lens rather than a lightweight carbon fibre option, and the Venus series focuses on optical character and manual control. With a geared aluminium housing, stepless aperture ring, and native Canon RF mount, this lens suits filmmakers who want a classic anamorphic look in an accessible full-frame format.

SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF Key Features

• Full-frame anamorphic cinema prime with 1.6x squeeze
• Manual focus design for controlled cinematic shooting
• 50mm focal length with wide horizontal field of view
• T2.9 aperture supports shallow depth of field and low-light work
• Classic blue flare rendering from point light sources
• Oval bokeh and strong background compression
• Geared cine-style housing for follow-focus systems

SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF in More Detail

Optical rendering and anamorphic character

The Venus 50mm delivers a distinct anamorphic look through a 1.6x squeeze factor. When de-squeezed, footage produces wide cinematic aspect ratios with pronounced oval bokeh and increased background compression compared to lighter anamorphic formats. This creates clear subject separation and a sense of depth that suits cinematic video.

The lens provides central sharpness while retaining characteristic anamorphic edge behaviour. Rather than a neutral or clinical rendering, the optical design emphasises visual character, supporting expressive storytelling and stylised scenes. Blue horizontal flare streaks appear when strong light sources enter the frame, reinforcing the classic anamorphic aesthetic.

Aspect ratios and full-frame coverage

With a 1.6x squeeze factor, the Venus 50mm supports traditional widescreen cinema delivery. When recording in 3:2 aspect ratio, footage can be de-squeezed to approximately 2.4:1, while 16:9 produces an even wider 2.8:1 aspect ratio. This allows filmmakers to achieve cinematic framing without heavy cropping.

Full-frame coverage provides additional flexibility when composing or reframing in post. The large image circle allows the lens to be used confidently on modern full-frame Canon RF cameras while maintaining the intended anamorphic look across the frame.

Focal length and perspective

At 50mm, the Venus lens offers a perspective close to natural human vision, while the anamorphic squeeze expands the horizontal field of view to resemble that of a much wider spherical lens. This balance makes it suitable for portraits, dialogue scenes, and mid-range framing where natural proportions are important.

The combination of focal length, squeeze, and oval bokeh helps separate subjects from their surroundings without exaggerated distortion, supporting more immersive and nuanced visual storytelling.

Handling, build and cine workflow

The Venus 50mm features a traditional cine-style aluminium housing with geared focus and aperture rings. Both rings are designed for use with follow-focus systems, supporting precise and repeatable control during filming. The stepless aperture ring allows smooth exposure changes during recording.

A built-in mounting point on the lens barrel supports rig balancing when used with cages or quick-release plates. This construction suits tripod-based, shoulder-mounted, and rigged setups where stability and manual control take priority over portability.

Can anamorphic footage be de-squeezed in common video editing software?

Yes. Most major video editing applications support anamorphic de-squeezing natively. Software such as Blackmagic Design DaVinci Resolve, Adobe Premiere Pro, and Apple Final Cut Pro allow users to apply a 1.33x or 1.6x de-squeeze either through clip settings, pixel aspect ratio controls, or by scaling. This makes it straightforward to work with anamorphic footage without third-party plugins.

What’s in the box

• SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF Mount

SIRUI Venus 50mm T2.9 1.6x Full-Frame Anamorphic Lens for Canon RF Specifications

Specifications