This is a lens, specifically a wide-angle prime lens intended for use with cameras. Its features include automatic aperture control and multi-coating, enhancing image quality. The specifications indicate a maximum aperture of f/2.8 and a focal length of 28mm.
Such optics were valued for their ability to capture a wide field of view, making them suitable for landscapes, street photography, and architectural shots. The fast aperture of f/2.8 allowed for shooting in low-light conditions and achieving shallow depth of field. Multi-coating reduced flare and ghosting, contributing to sharper and more contrasty images. Historically, these types of lenses represented a balance between compactness, versatility, and image quality, often sought after by photographers on a budget or those preferring a lightweight setup.
