A kit lens is a "starter" lens sold bundled with an interchangeable-lens camera such as an SLR. It is generally a cheap lens priced at the lowest end of the manufacturer's range, so as to not add much to a camera's price. Originally, kit lenses were generally of normal focal length; more recently, kit lenses tend to be cheap zoom lenses that range from medium wide angle to mild telephoto. While prime standard lenses bundled with SLR cameras were generally sharp and fast enough for most kinds of photography, most kit zooms are deliberately limited in abilities, so that the camera purchaser will have an incentive to purchase additional lenses in future.