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The B+W 49mm Close-up +2 Lens (NL2) is a close-up diopter lens which allows you to decrease the minimum focus distance on any lens, in turn increasing the effective maximum reproduction ratio of your lens. Additionally, you can combine close-up lenses to increase their strength and to fine tune your close-up settings.
The +2 diopters of this close-up lens focus at a distance of 50cm (1.6') with the lens focused at infinity. For the normal lens it is a stepless extension of its close-up range to approximately 1:4.5. On short to medium telephoto lenses it extends the NL1 close-up range seamlessly (with an 85mm lens to approx. 1:3.5 and with a 135mm lens to approx. 1:2.5).
B+W filters are constructed from high quality Schott glass for increased optical clarity and color fidelity. This filter has a single anti-reflective coating, which helps to improve light transmission to over 98% while preventing internal reflections and ghosting. Additionally, it features a brass filter ring for increased durability as well as jamming prevention.
This filter decreases the minimum focus distance of any lens, providing macro-like results.
The maximum magnification achieved with these attachments will depend on the focal length of your lens as well as the actual close focusing capability of that particular lens
Single anti-reflective coating helps increase light transmission to over 98% while reducing reflections, flare, and ghosting.
Constructed from high quality Schott glass for optical clarity.
Brass filter ring helps to prevent jamming and provides additional strength.