(Refurbished Excellent) Sirui 50mm F1.8 Anamorphic Lens - X-mount Camera Lens

The Sirui 50mm f/1.8 1.33× Anamorphic Lens (X-mount) is a cinema-style anamorphic prime that brings the classic widescreen cinematic look to APS-C cameras like Fujifilm X-series bodies. With a 50 mm focal length and a 1.33× anamorphic squeeze factor, footage shot in a standard 16:9 aspect can be de-squeezed in post to achieve a dramatic 2.4:1 widescreen frame — giving your video a professional cinematic presentation without cropping.

This lens uses 11 optical elements in 8 groups and features a bright f/1.8 to f/16 aperture range with 10 aperture blades, enabling good low-light performance and smooth, pleasing oval bokeh that’s characteristic of anamorphic optics. The large manual focus ring rotates approximately 143.6° for precise adjustments, and the lens accepts 67 mm front filters for creative control.

Designed for APS-C-format sensors with manual focus only, the lens does not have electronic communication with the camera and lacks image stabilization or autofocus — features typical of budget anamorphic designs — but compensates with its optical character, unique horizontal lens flares, and cinematic compression effect.

Typical specifications include a minimum focus distance of ~0.85 m to infinity, a filter thread of 67 mm, and a build that weighs around 560 g with a length of approximately 106.6 mm. The anamorphic squeeze expands the horizontal field of view by about 33 % compared to a standard 50 mm lens, effectively providing a wider cinematic angle without changing framing size.

This lens is popular with indie filmmakers and video creators who want an anamorphic aesthetic — including oval bokeh, wide aspect ratio, and cinematic flare characteristics — at an accessible price, and it’s available in multiple mounts including X-mount for Fujifilm, E-mount for Sony, and others.

Key Features

Focal Length: 50 mm (≈75 mm full-frame equivalent)

Max Aperture: f/1.8

Anamorphic Squeeze: 1.33× for 2.4:1 widescreen

Optical Construction: 11 elements in 8 groups

Aperture Blades: 10

Focus: Manual only, ~143.6° focus rotation

Filter Thread: 67 mm

Mount: X-mount variant (also available in other mounts)

Format Coverage: APS-C / Super35