B+W Close- Up Lens NL-2 55 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.
Suffi cient 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.
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.