The 27mm f/2.8 AF Lens by 7artisans Photoelectric is a lightweight prime lens with a flexible focal length, tailored for Sony E-mount camera systems. It provides a full-frame equivalent of 40.5mm and boasts a minimum focusing distance of 1 foot, allowing for the capture of detailed close-ups and attractive portraits that include ample background context. The lens features an STM stepping autofocus motor along with eye recognition focusing capabilities, ensuring sharpness in both still images and video recordings. Users can also easily download firmware updates via the USB-C port situated on the lens's outer surface.