The invention discloses a lens and a camera equipped with the lens. The lens comprises an eyeglass set, a lens cover which is arranged outside the eyeglass set and is used for fixing the eyeglass set, and an assembled printed circuit board which is arranged at one side of the eyeglass set and is connected with the eyeglass set, wherein the eyeglass set comprises eyeglasses, waterproof glass arranged at outer sides of the eyeglasses and electrical heating sheets arranged between the eyeglasses and the waterproof glass, the electrical heating sheets are used for conducting heat to the waterproof glass to realize anti-mist anti-frost functions, and the electrical heating sheets comprise one type of graphene film heating sheets and tin-doped indium oxide film heating sheets. Resistance of the electrical heating sheets employed by the lens is 300-350 ohm, when the external temperature is 10-25 DEG C, the arrival heating temperature of the electrical heating sheets is 35-45 DEG C, the heating temperature can be realized through 3-second heating; when the external temperature is 0-5 DEG C, the arrival heating temperature of the electrical heating sheets is 25-30 DEG C, the heating temperature can be realized through 5-second heating. According to the lens, the heating temperature is relatively mild, a heating speed is relatively fast, not only can aging of the eyeglasses be not easy, but also energy loss is low, and the heat conduction effect is relatively good.