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Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (FUJIFILM X, Blue Flares)

BH #SI40AF133XXB • MFR #40AF133X-XB
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Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (FUJIFILM X, Blue Flares)
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Key Features
  • Covers Super 35 | T1.8-T22 Aperture
  • Selectable Manual and Autofocus
  • Blue Streak Flares
  • Creates 2.35:1 Aspect Ratio in 16:9
Capture cinematic widescreen footage with the aid of an autofocus option using the Sirui FUJIFILM X-mount 40mm T1.8 1.33x S35 AF Anamorphic Lens. This innovative prime lens uses an STM motor for fast, accurate autofocus while offering manual focus for more complicated shots handled by a camera assistant/focus puller. It produces blue flares that are a classic feature of the anamorphic format and has a fast T1.8 maximum aperture lens that is ideal for low-light capture and for creating distinctive bokeh effects.
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$599.00
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When mounted on a Fujifilm X body are you be able ...

When mounted on a Fujifilm X body are you be able to see both "Body" and "Lens" firmware versions?
Asked by: Gary
Only native Fuji lenses will display their firmware version in the camera menu. Third-party lenses, such as the Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (FUJIFILM X, Neutral Flares), will not show firmware information in the camera’s menu.
Answered by: Chris H
Date published: 2025-07-05

On an APS-C camera, such as the Sony FX30, what ...

On an APS-C camera, such as the Sony FX30, what would be the equivalent focal length of this 40mm Sirui Anamorphic Lens?
Asked by: Craig
The Sirui 40 mm T1.8 1.33x S35 AF Anamorphic Lens (Sony E, Neutral Flares) would have a 60 mm view on the APS-C sensor of the Sony FX30.
Answered by: Chris H
Date published: 2025-09-01

I am not seeing Nikon Full Frame cameras showing ...

I am not seeing Nikon Full Frame cameras showing up as "compatible" to this lens. I have cameras like Z6III. Why is that?
Asked by: Taka
The Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (Sony E, Blue Flares) is an S35 lens and will not support a full-frame camera. However, most cameras have APS-C or S35 modes, and if you use your camera in crop sensor mode, the lens will work. Also, make sure to purchase the Z-mount lens model. See below: Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (Nikon Z, Blue Flares), BH # SI40AF133XZB
Answered by: Elliot A
Date published: 2025-11-03

Can this lens (in any of its formats) be adapted ...

Can this lens (in any of its formats) be adapted to a Canon RF camera?
Asked by: Craig
No, unfortunately, the Sirui 40 mm T1.8 1.33x S35 AF Anamorphic Lens in Leica L, Sony E, Nikon Z, FUJIFILM X, or Micro Four Thirds does not adapt to or have an adapter for connecting to an RF-mount camera.
Answered by: Elliot
Date published: 2025-06-12

The angle of view specs for the MFT version are ...

The angle of view specs for the MFT version are the same as the E-mount version. Is the MFT crop factor taken into account here?
Asked by: David
When using the Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (Micro Four Thirds, Neutral Flares) and all other lenses, the focal length of a lens does not change when used on a different system; it is the field of view compared to a full frame that changes. Crop factor compared to 35mm equivalent is only relevant when comparing to full frame.
Answered by: Elliot
Date published: 2025-09-01

Is this compatible with the Z-Mount Red Komodo X?

Is this compatible with the Z-Mount Red Komodo X?
Asked by: Daniel
The actual answer is "not yet" - Sirui has not released the appropriate firmware for this to work on the Komodo-X Z-mount (their response to me). The lens will mount, but will have no power and will not be recognized by the KX. Without power, the iris is stuck at f/22, cannot be adjusted, and the lens cannot even be manually focused.
Answered by: Ron
Date published: 2025-07-12

Can you change the mount like you can do on some ...

Can you change the mount like you can do on some of the Siri?
Asked by: Paul
The mount of the Sirui 40mm T1.8 1.33x S35 AF Anamorphic Lens (Leica L, Blue Flares) cannot be changed or swapped.
Answered by: John W
Date published: 2025-08-11
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