Sirui's ultra-fast cinema wide prime — T1.2 at 24mm for low-light APS-C filmmaking.
The Sirui Nightwalker 24mm T1.2 is a cinema manual-focus prime for Canon RF-mount APS-C, providing a 38mm full-frame equivalent perspective. Twelve elements in 11 groups. Twelve aperture blades. 67mm filter thread. Under 600g. 0.30m MFD. T1.2 maximum aperture (cinema T-stop rating). APS-C / Super 35 image circle.
Twelve elements in 11 groups. Twelve aperture blades (smooth iris). The 67mm filter thread. Under 600g (exact weight not published in official spec). Minimum focus distance of 0.30m. Manual focus only. T1.2 maximum aperture. APS-C / Super 35 (31mm max) image circle. Canon RF mount.
The Nightwalker series is Sirui's compact cinema prime range designed for APS-C and Super 35 bodies. T1.2 indicates actual light transmission versus a photographic f/1.2 approximation. The 12-blade iris provides smooth, circular bokeh at any aperture. The Canon RF mount APS-C coverage applies on Canon EOS R7/R10/R50 and similar; RF full-frame bodies apply the Super 35 crop.
On the used market the Sirui Nightwalker 24mm T1.2 is affordable as a compact APS-C cinema prime for Canon RF. Condition checks: manual focus smoothness, 67mm front element for marks, iris operation. Manual focus only. APS-C/Super 35 only. Compatible with Canon RF-mount bodies (APS-C crop applies on full-frame bodies).