Ambico semi fish-eye 0.42x lens with vintage leather canon case

Ambico Semi Fish-Eye 0.42x lens, made in Japan, which is an accessory for cameras to create a wide, distorted perspective. Key features and information: Type: Semi fisheye lens, offering a wide-angle view with noticeable distortion.  Magnification: 0.42x, indicating the degree of widening effect it has on the image.  Usage: It is used for capturing a broad field of view, often employed in situations like extreme sports, underwater photography, or creating special effects.  Distortion: Characteristic of fisheye lenses, it produces a convex warping of the image, making objects in the center appear closer and those at the edges farther away.  Mount: Typically a screw mount, easily attachable to compatible cameras.  Types of Fisheye Lenses: Fisheye lenses come in two main types: full-frame and circular.  Advantages: Useful for landscapes, interiors, and creative shots where a wide perspective is desired.