SIRUI Astra 50mm T1.8 1.33x anamorphic lens (Sony E, Neutral Flare), three-quarter view
SIRUI Astra 50mm T1.8 1.33x anamorphic lens (Sony E, Neutral Flare), front view
SIRUI Astra 50mm T1.8 1.33x anamorphic lens (Sony E, Neutral Flare), upright view
SIRUI Astra 50mm T1.8 1.33x anamorphic lens (Sony E, Neutral Flare), rear view with AF/MF switch
SIRUI Astra 50mm T1.8 1.33x anamorphic lens (Sony E, Neutral Flare), mounted on a Sony camera
SIRUI Astra 50mm T1.8 1.33x anamorphic lens (Sony E, Neutral Flare), on a Sony camera, front three-quarter

Vendor:SIRUI

SIRUI Astra 50mm T1.8 1.33x Full-Frame AF Anamorphic Lens (Sony E, Neutral Flare)

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1-Year Warranty

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The SIRUI Astra 50mm T1.8 is part of SIRUI's first full-frame autofocus anamorphic cine lens series, here in Sony E mount with the Neutral Flare coating. It gives a natural, versatile field of view for interviews, dialogue and everyday storytelling, combining the oval bokeh and widescreen character of anamorphic glass with fast, reliable autofocus.

Most mirrorless cameras record 16:9. With a constant 1.33x squeeze, Astra restores the classic 2.4:1 cinematic frame straight from the sensor, with no cropping and no pixel loss. The T1.8 aperture keeps images clean in low light and gives shallow depth of field for natural subject separation.

Key Features

  • Fast, precise autofocus with AF/MF switch: shoot anamorphic solo or with a small crew, no focus puller needed
  • Constant 1.33x squeeze: de-squeezes 16:9 to a 2.4:1 widescreen frame with no cropping or lost resolution
  • Full-frame coverage with a 44mm image circle, also suits Super 35 and APS-C
  • Neutral Flare: natural, understated flares for everyday, documentary and natural scenes
  • Oval bokeh and vertical background stretch, with improved centre sharpness and controlled distortion and focus breathing
  • FN button for AF lock or a custom function
  • Iris lock: lock at A for camera-controlled aperture, or unlock for manual aperture on the lens
  • Click on/off switch for stepped or smooth (de-clicked) aperture
  • Feet/metre focus scale, compatible with LiDAR follow-focus systems
  • Identical gear positions and matched colour across the 50, 75 and 100mm
  • Aluminium alloy body, dustproof, dirt-resistant and raindrop-resistant
  • 11-blade aperture, T1.8 to T22

Specifications

  • Focal length: 50mm
  • Aperture: T1.8 to T22
  • Squeeze ratio: 1.33x
  • Format: full frame (44mm image circle)
  • Mount: Sony E
  • Focus: AF / MF
  • Optical design: 18 elements in 14 groups (4 cylindrical, 1 aspherical)
  • Aperture blades: 11
  • Minimum focus: 0.5 m (1.64 ft)
  • Max magnification: 1:7.2 (V) / 1:10.2 (H)
  • Filter thread: 67mm (M67 x 0.75)
  • Max diameter: 80mm
  • Focus ring diameter: 80mm
  • Aperture ring diameter: 75.2mm
  • Outer diameter: 72mm
  • Focus ring rotation: 136°
  • Length: 131 mm (Sony E, excl. cap)
  • Weight: 620 g (Sony E, excl. cap)

In the Box

  • SIRUI Astra lens
  • Packaging box
  • Carrying bag
  • Lens caps
  • Lens cleaning cloth
  • Warranty card

Warranty

SIRUI offers 3-year free replacement for non-human damage and lifetime paid repair for products bought from official SIRUI dealers. CineCiti is an authorised SIRUI dealer. See the warranty card for full terms.