Sirui's anamorphic 50mm for APS-C mirrorless — 1.33x squeeze at f/1.8 for cinematic normal perspective.
The Sirui 50mm f/1.8 1.33× Anamorphic was released approximately 2021 as an anamorphic cinema prime for Micro Four Thirds, providing a 100mm full-frame equivalent perspective after de-squeeze. Eleven elements in 8 groups. Ten aperture blades. 67mm filter thread. At 560g. 0.85m MFD. 1.33× horizontal squeeze.
Eleven elements in 8 groups. Ten aperture blades. The 67mm filter thread. At 560g. Minimum focus distance of 0.85m. Manual focus. 1.33× horizontal anamorphic squeeze — de-squeeze to 2.40:1 in post. APS-C/MFT image circle. f/1.8 maximum aperture. Micro Four Thirds mount.
The 1.33× squeeze compresses the horizontal field of view in-camera for a 2.40:1 widescreen aspect ratio after de-squeeze. At 50mm on MFT (2× crop), the 50mm perspective provides approximately 100mm full-frame equivalent in the spherical (non-squeezed) dimension. Anamorphic characteristics include horizontal lens flares and oval-shaped bokeh highlights.
On the used market the Sirui 50mm f/1.8 1.33× Anamorphic is affordable as an entry-level MFT anamorphic prime. Condition checks: manual focus helicoid smoothness, 67mm front element for marks. Manual focus only. Compatible with all Micro Four Thirds bodies.