About Vivitar 8mm f/3.5 Fisheye Lens:
The Vivitar 8mm f/3.5 Fisheye Lens is specifically designed for APS-C image sensors, although it produces a rounded image when used with a full-frame camera. With an impressive 180-degree angle of view, this fisheye lens can capture striking image expressions that go beyond human perception, such as exaggerated perspective and distortion. It comes with a removable petal-type hood and drawstring pouch for convenience.
Other features include a hybrid aspherical lens and multi-layer coating for superior image quality, as well as a 12-inch (30.5cm) minimum shooting distance. However, note that the lens is manual focus only and lacks electronic connections for automatic focus or metering. Additionally, the lens has a built-in petal-type lens hood, a minimum focusing distance of 12 inches (30.48 cm), and is not zoomable.