Handheld filter Glass diameter: 79mm/150mm Hand held diopter, semilunar filter, Diopter+0.5,+1,+2,+3 Diameter 79mm+1,+2,+3 Diameter 150mm+0.5,+1,+2 Suitable for any lens, easy to control with both hands, achieving blurry special effects; Recommended focal length: 35mm-85mm; Recommended aperture 2.8/2/1.4 +1. Recommended focal length 70-120mm +2. Recommended focal length 35-85mm +3. Recommended focal length 18~55mm