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The B+W 39mm Close-Up +5 SC NL 5 Lens offers the ability to achieve macro-like results with camera lenses that have 39mm front filter threads. A close-up lens is a magnifier that optically decreases the focal length of a camera lens placed behind it. This effect lessens the minimum focus distance between the camera lens and a subject. Magnification can then be obtained by decreasing the distance between the subject and the combined camera lens and close-up lens.
The magnifying power of a close-up lens is indicated by its diopter strength. A close-up lens with a higher diopter number provides more relative magnification and can be combined with other close-up lenses to increase, or fine-tune the macro effect. This close-up lens has a diopter strength of +5. Diopter strengths of +1, +2, +3, or +4 are also available where this close-up lens type's effect becomes progressively stronger with each diopter strength number increase.
The front surface of a B+W Close-Up +5 SC NL 5 Lens possesses a high degree of curvature that makes usable front filter threads impossible. To combine this B+W 39 Close-Up +5 SC NL 5 Lens with other close-up lenses or filters, it must screwed onto the very top of any combination of stacked close-up lenses or filters.
To prevent internal ghosting and reflections, each glass surface of this lens includes one layer of anti-reflection coating. B+W close-up lenses are constructed from Schott glass for increased optical clarity. This close-up lens features an F-Pro brass filter ring for durability as well as jamming prevention.
Offers macro-like results for camera lenses that have a 39mm front filter threads
Can be screwed on top of separately available close-up lenses with +1, +2, +3, or +4 diopter strengths and 39mm front threads which allows the desired close-up effect to be varied and modified
Constructed from Schott glass for optical clarity
F-Pro brass filter ring helps to prevent jamming and provides additional strength