Sirui's Nightwalker cinema prime — T1.2 at 55mm for APS-C low-light filmmaking.
The Sirui Nightwalker 55mm f/1.2 S35 is a manual-focus fast standard prime for Sony E-mount APS-C (Super35), providing 82mm full-frame equivalent perspective. Eleven elements in 10 groups. Twelve aperture blades. 67mm filter thread. At approximately 500g. 0.6m MFD. De-clickable aperture.
Eleven elements in 10 groups. Twelve aperture blades. The 67mm filter thread. At approximately 500g. Minimum focus distance of 0.6m. De-clickable aperture ring for smooth video iris pulls. Manual focus only. T-stop marking for cinema use. f/1.2 maximum aperture. APS-C / Super35 image circle. Sony E mount.
The Nightwalker S35 series is Sirui's cinema-oriented APS-C prime line: the S35 (Super35) designation indicates APS-C coverage, not full-frame. The de-clickable aperture enables smooth aperture transitions during video recording. The T-stop marking (actual light transmission) is cinema convention. The 12-blade aperture provides near-circular bokeh at mid apertures for video work.
On the used market the Sirui Nightwalker 55mm f/1.2 S35 Sony E is affordable as a manual-focus fast APS-C prime for video. Condition checks: focus helicoid smoothness, aperture click/de-click mechanism, 67mm front element for marks. Manual focus only. APS-C/S35 only — not full-frame. Compatible with Sony E-mount APS-C bodies (A6xxx series).