
The B+W 49mm Close-Up +1 (NL1) Filter is ideal for telephoto & zoom lenses with a near focusing distance of Approx. 1m (3 1/4 feet), resulting in a focusing range without a gap. With the 3.5cm format, it is ideal for lenses with focal lengths between 85mm (up to Approx. 1:5) & 200mm (up to Approx. 1:3). On a 50 mm lens, start with the NL 2 close-up lens!