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Sirui 20mm T1.8 1.33x anamorphic lens E-mount blue flare

Sirui

Sirui 20mm T1.8 1.33x Anamorphic Lens E-Mount Blue Flare

SKU CH-71MS-YS53Z

A 20mm T1.8 anamorphic lens with 1.33x squeeze for Super35 sensors, STM autofocus with eye-tracking, 16 elements in 12 groups, 11-blade diaphragm.

  • Cinematic widescreen look from 1.33x squeeze on Super35 sensors
  • Fast T1.8 aperture and 0.4 m focus for immersive depth
  • 11-blade diaphragm creates smooth bokeh with blue flare option
  • STM autofocus with eye tracking for precise subject lock
  • 20mm lens gives 22mm full-frame equivalent expansive view

Cinematic 1.33x squeeze for Super35

The Sirui 20mm T1.8 anamorphic lens brings a true 1.33x horizontal squeeze to Sony E-mount cameras, delivering a widescreen 2.4:1 look without cropping on Super35 and APS-C sensors. Its 20mm focal length provides a horizontal field of view equivalent to a 22mm full-frame lens, ideal for expansive landscapes and tight interiors.

STM autofocus with eye-tracking

An STM stepping motor enables fast, accurate and smooth autofocus, a rare feature in anamorphic designs, and supports eye-tracking for stable focus lock during high-speed shooting. The lens also offers seamless switching between autofocus and manual focus modes for total creative control.

16 elements in 12 groups with 11-blade diaphragm

The sophisticated optical design uses 16 elements in 12 groups to minimise distortion and aberrations while maintaining exceptional clarity. An 11-blade diaphragm produces smooth, circular bokeh, and the blue flare variant adds distinctive cinematic character to highlights. A close 0.4 m minimum focus distance enhances depth and spatial perception at the wide T1.8 aperture.

How it compares

Measured against everything we stock in Camcorder & C-Mount Lenses, at today’s prices. Recalculated every night.

Price $482.99
Pricier than about 57% of the 328 comparable items (median $313.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I install this lens on my Sony E-mount camera and what step do people often miss?

Align the lens mount index with the camera's mount index, rotate clockwise until it clicks, then enable autofocus in the camera menu to activate the STM stepping motor and eye-tracking features.

What maintenance will this 16-element, 12-group anamorphic lens need over time?

Clean the front and rear elements with a microfibre cloth and lens solution; the 11-blade diaphragm and STM motor are sealed and require no user servicing.

At what point does the T1.8 aperture limit sustained low-light video recording?

The T1.8 maximum aperture is the brightest setting available; beyond this, you must increase ISO or add light because the aperture cannot open further.

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