Digital cameras offer three lens types: zoom, fixed, and interchangeable. A zoom lens offers varied focal lengths. Changing the focal length changes the lens magnification, bringing the image closer or sending it further than it actually is. A zoom lens gives you greater flexibility than a fixed lens, but it costs more. A fixed lens magnification is unchangeable. A fixed lens usually produces sharper images, but limits you to the distance from which you shoot. Interchangeable lenses offer the greatest flexibility, but are also the most expensive option.