B+W Close-Up Lens NL-2 67 mm. Would you like to explore fantastic worlds in miniature? Close-up lenses open up new motifs in an inexpensive way. Like reading glasses, close-up lenses move the focus range into the close-up zone. The effect increases with the diopter number and the focal length of the lens.
For shorter focal lengths in digital photography stronger close-up lenses are therefore recommended. The image scale describes the effect. A scale of 1 : 3 renders an object at a third of its original size on the fi lm/sensor. Close-up and macro lenses are simple aids which are suitable in particular for three-dimensional objects (fl owers) and pictorial photography, less for technical reproduction purposes.
Sufficient stopping down increases the sharpness and the depth of field. With a focal length of 50 mm it attains an image scale of approx.1 : 3. With 100 mm focal length this even advances to 1 : 1.9. To increase brilliance and sharpness, stopping down by about two f-stops is recommended. With the B+W Close-Up Lens NL 4, calyxes (flower heads) already become too large for the format.
Tip: Use a tripod for longer exposure times.
Table of 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 |
| Focus Mode |
| Incredibly |
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 |
Please note that the table above is only the reference value. Exact values must be determined for each lens individually.
Tip: By diluting the lens, the depth of field in the image is dramatically reduced when using a front 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.