A panoramic lens is a type of lens for panoramic photography that allows a photographer to capture a wide, sweeping view of their subject. Panoramic lenses are typically ultra-wide-angle lenses with a focal length of around 1mm to 2.8mm. They have a wide field of view, ranging from 180 degrees to 360 degrees, depending on the lens design. A shorter focal length means a more wide-angle image. Field of view, on the other hand, is the size of the area that is visible in a photograph. It is determined by the lens used and the size of the camera’s image sensor. A wide-angle lens, for example, provides a wider field of view than a telephoto lens. This means that a wide-angle lens will capture more of the scene in the photograph, while a telephoto lens will capture less. M12 panoramic lenses are commonly used in security and surveillance systems, as they allow for wide coverage of an area with a single camera. They can also be used in other applications, such as drone photography or virtual reality, where capturing a wide field of view is important. When selecting an M12 panoramic lens, it's important to consider factors such as the field of view, distortion, aperture, and resolution. These factors can affect the quality of the final image and the suitability of the lens for a specific application.