A bright portrait-length prime, the AF 85mm f/1.8 Lens from Brightin Star is a versatile lens well-suited for available-light photography in a variety of situations. The fast f/1.8 maximum aperture offers increased control over depth of field for working with shallow depth of field techniques and also suits working in difficult lighting conditions. An STM motor affords quiet, quick, and accurate autofocus performance. The optical design incorporates three high refractive index and two low dispersion elements, which reduce chromatic aberrations and distortion. A rubber seal protects the lens mount from moisture, and a multilayer coating is also applied to the glass to suppress flare and ghosting for improved contrast and color accuracy when working in strong lighting conditions. Additionally, a USB-C port is integrated into the lens design to permit firmware updates.