Sirui is a brand founded in 2001 with an excellent reputation for anamorphic optics. Very reliable and high quality products, this Sirui 100mm full-format anamorphic is ideal for both photographers and filmmakers. Sharp, distortion-free images can be obtained, plus there is much more information horizontally in close-ups, thus leaving a strong visual impact on the viewer. Most mirrorless cameras have a 3:2 and 16:9 sensor, so you get an aspect ratio of 2.4:1. On a 16:9 sensor you would end up with a 2.8:1 aspect ratio giving much more information. These anamorphic lenses have excellent sharpness (ready for 8K shooting) with a soft, natural background.