CINELUX REDUXA A1 Focal Reducer for ARRI ALEXA Classic/XT/SXT Teased

Camera Accessories

by Jeff LochJuly 28^th, 2026

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CINELUX has recently teased what could be the first focal reducer for the ARRI ALEXA Classic/XT/SXT: the REDUXA A1. While still in a very early prototype stage, the A1 should work similarly to a Speed Booster, giving you an extra stop of light and reducing the focal length by a ratio of 0.71x. So, let’s take a closer look at it!

We first heard about British manufacturer CINELUX in 2025 with their NEXA-MAG for RED DSMC1 and DSMC2 cameras. Earlier this year, the company introduced the REDUXA R2, a focal reducer for RED DSMC2 cameras. However, to this day, the “focal reducer RED never made” still hasn’t seen the light of day. Indeed, the CINELUX team found out that it was tougher than expected to make such an adapter, especially because of RED’s OLPF system.

CINELUX initially planned to release the REDUXA A1 for ARRI cameras after the RED version, but they took what they learned so far on the RED version and transposed it to the ARRI model, which seems easier to make.

CINELUX REDUXA A1 – features

The ARRI ALEXA Classic was released back in 2010, the XT came out in 2014, and the SXT in 2015. Even after 16 years, the oldest of these cameras remain incredible, thanks largely to their ALEV image sensors and color science. All three cameras came out with a fixed, non-interchangeable PL Mount. The CINELUX REDUXA A1 aims to make these beefy cameras a little bit more “versatile” with an interchangeable lens mount.

To make that possible, you’ll need to disassemble the camera’s PL mount and replace it with the CINELUX adapter plate. This adapter plate gives the camera a RED-style interchangeable lens mount, allowing you to swap mounts by removing just four screws.

You got it, the REDUXA A1 then attaches to the adapter plate via four screws. According to the company, this adapter should give you “electronic lens communication and aperture control”. However, the lens mount of the A1 is not disclosed, but we can guess it is Canon EF.

The REDUXA A1 should work similarly to SpeedBoosters filmmakers are familiar with. In a nutshell, a SpeedBooster reduces the focal length by a ratio of 0.71x. It means that a 50mm lens will become a 35mm lens. The other benefit is that, in the process, you gain close to one extra light stop. For example, a lens with a maximum aperture of f/4 will now become f/2.8. Last but not least, image sharpness is usually improved.

Price and availability

The CINELUX REDUXA A1 is still an early prototype, and no price or availability has been announced. If you are interested, you can subscribe to CINELUX’s newsletter to get product updates as they make progress.

What do you think about this focal reducer for ARRI cameras? Have you ever considered purchasing a second-hand OG ARRI camera? Don’t hesitate to let us know in the comments below!