The Viltrox AF 33mm F1.4 is a fast standard prime lens for Sony APS-C E-mount mirrorless cameras, offering a bright f/1.4 aperture equivalent to approximately 50mm field of view for portrait, street, and everyday photography. It features a stepping motor for quiet autofocus and supports firmware updates via USB. Part of Viltrox's APS-C prime lens lineup for Sony E-mount crop-sensor cameras.