VILTROX 56mm F1.4 f/1.4 Auto Focus Lens Compatible with Canon EOS EF-M Mount Cameras M10 M100 M200 M3 M5 M50 M50II M6 M6II VILTROX 56mm f1.4 EF-M Mount Autofocus APS-C Prime Lens for Canon EOS M Cameras, this is a portrait lens specially built for Canon EOS M. The focal length of the lens is equivalent to the focal length of 90mm, suitable for portraits, scenery, indoors, and Scenes such as buildings and night scenes. The short telephoto focal length pairs with a bright f/1.4 maximum aperture to help achieve notable control over depth of field and also benefits working in difficult lighting situations. The optical design incorporates extra-low dispersion and high refractive index elements, too, to reduce various aberrations and distortion for high clarity, color accuracy, and sharpness. Complementing the optics, the lens's design also incorporates an STM stepping motor that affords fast, near-silent, and accurate autofocus performance along with full-time manual focus override. An internal focusing design also contributes to quick performance. Additionally, the lens features an integrated micro-USB port for making future firmware updates to the lens.