A ZOOM lens is a type of lens that allows the user to change the focal length, allowing for a range of magnifications. Bifocal lenses are lenses that have two different focal lengths, allowing for both near and far vision. Telephoto lenses are lenses that have a long focal length, allowing for distant objects to be magnified. Fisheye lenses are lenses that have an extremely wide angle of view, allowing for a distorted, curved image. Wideangle lenses are lenses that have a wider angle of view than normal lenses, allowing for more of the scene to be captured in the image.