B+W Close-up lens NL-5 52 mm. Close-up lens with +5 diopters gives your lens improved near-field. Select +5 diopters when you want a magnification up to approx. 1:2.6 with a 50 mm lens (for sensor area 236 mm). B+W Close-up lenses are high-quality magnifying lenses that enhance the close-up of camera lenses. This makes it possible to go 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.