The Sirui 40mm T1.8 is an anamorphic lens from the Astra Series, made for S35 frame cameras. It has a constant 1.33x squeeze ratio and a T1.8 aperture. Focusing is automatic, driven by an STM autofocus motor.
The lens comes in two flare styles, blue and neutral. It is part of a two-lens set with a 20mm and a 40mm focal length that share the same specs. The lens is lightweight and produces distinctive bokeh.
- Series
- Astra Series
- Focal length
- 40mm
- Aperture
- T1.8
- Squeeze ratio
- 1.33x, constant
- Frame format
- S35
- Focus
- STM autofocus
- Flare styles
- Blue flare or neutral flare