B+W Close-up lens NL-3 40.5 mm. Close-up lens with +3 diopters gives your lens improved near-field. +3 diopters provide a close range from approx. 33 cm measured from the front edge of the lens, regardless of the focal length of the lens. The magnification will be down to about 1:5.5 with a 35 mm lens on camera with a sensor surface of 24 x 36 mm. B+W (Cover Lenses, Proxars, Close-up lenses) close-up lenses are a high-quality magnifying lens that improves the close-up of camera lenses, which makes it possible to get closer to the subject to get a larger image scale. By using a close-up lens, the camera's image resolution is maintained and you can avoid enlarging/cropping in an image processing program.
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Table magnifications B+W Close-up lenses
| CLose-up Lens |
NL 1 |
NL-2 |
NL 3 |
NL 4 |
NL 5 |
Macro 10 |
| Diopter |
+1.0 |
+2.0 |
+3.0 |
+4.0 |
+5.0 |
+10 |
| Focusing mode |
| Infinite |
1.00 |
0.50 |
0.33 |
0.25 |
0.20 |
— |
| 10 m |
0.90 |
0.47 |
0.325 |
0.245 |
0.20 |
— |
| 7 m |
0.87 |
0.46 |
0.32 |
0.24 |
0.195 |
— |
| 5 m |
0.83 |
0.45 |
0.31 |
0.235 |
0.19 |
— |
| 3 m |
0.75 |
0.42 |
0.30 |
0.23 |
0.185 |
— |
| 1 m |
0.50 |
0.33 |
0.25 |
0.20 |
0.165 |
0.09 |
| 0.5 m |
0.33 |
0.25 |
0.20 |
0.16 |
0.14 |
0.08 |
Note that the table above is for reference only. Exact values must be determined for each lens individually.
Tip: By dimming the lens, the depth of field in the image is dramatically increased when using a lens.
For more than 90 years, B+W filters have been synonymous with quality and innovation. B+W has succeeded in establishing itself as one of the world‘s leading filter manufacturers. It has, for example, made decisive progress in surface coating. B+W is the first filter manufacturer in the world to offer MRC (Multi Resistant Coating). MRC nano coating is the most innovative development in thin-layer technology. The world-famous Käsemann type polarizing filter with its outstanding quality has been produced by B+W since 1989.
