Sirui Astra AF 50mm T1.8 1.33x Full-Frame Anamorphic Lens
Features
- The Sirui Astra 50 mm T1.8 1.33× is a groundbreaking full-frame anamorphic cine lens — the first in its class to combine 1.33× squeeze, T1.8 aperture, and autofocus in a compact form. Designed for mirrorless cinematographers, this lens delivers a cinematic widescreen look with natural subject separation, smooth bokeh, and the classic horizontal flare character. With a constant T1.8 across its focal range and support for E, Z, and L mounts, it brings high-end anamorphic aesthetics into a workflow-friendly, lightweight package.
- Built with 18 optical elements (including cylindrical and aspherical lenses), it offers excellent image quality across the frame. The lens body is crafted from aluminum alloy with triple protection (dust, dirt, raindrop), making it durable for professional use. Its autofocus system uses a silent STM motor and features an AF/MF switch, autofocus lock (FN), iris lock, and stepped or stepless aperture control — all giving you flexibility for different shooting styles.Its design supports full-frame sensors (44 mm image circle) and has a minimum focus distance of 0.5 m, enabling creative close-ups. The lens comes in two classic flare styles: Blue (sci-fi, vibrant) and Neutral (more organic).
- Full-frame 1.33x anamorphic design for true cinematic widescreen (2.35:1).
- Bright T1.8 aperture for low-light shooting and shallow depth of field.
- Autofocus + Manual Focus with quiet STM motor.
- Available in Sony E / Nikon Z / L-Mount.
- Blue or Neutral flare options for different cinematic looks.
- 18 elements in 14 groups including cylindrical & aspherical optics.
- 0.5m minimum focus distance for close-up shots.
- Dual-mode stepped / stepless aperture with iris lock.
- Durable aluminum alloy body with weather protection.
- Lightweight & compact for run-and-gun filmmaking.
- 67mm filter thread for easy accessory compatibility.
- Dual measurement focus scale (feet + meters).
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