B+W close-up lenses easily and inexpensively extend the close-up range of camera lenses. Similar to reading glasses, close-up lenses shift the focusing range into the close-up zone. The effect increases with the diopter value of the close-up lens and the focal length of the lens. With this accessory that takes up very little space in your camera bag, the application range of normal to small telephoto lenses can be greatly extended.
With +1 diopter, this close-up lens is ideal for telephoto and zoom lenses with a close-up setting down to around 1 meter. Ideal in the 35 mm format for lenses between 85 mm (to about 1 : 5) and 200 mm focal length (to approx.1 : 3), and for popular standard zoom lenses. For the 50 mm standard lens, the rule is: go straight for the close-up lens +2!
For all lens settings, the B+W +2 diopter close-up lens focuses at a distance of 0.5 m, so for 50 mm lenses there is seamless expansion providing an extended close-up range to approx. 1 : 4.5. For telephoto lenses up to 135 mm, the range of the NL 1 is continued seamlessly (at 85 mm to approx. 1 : 3.5, at 100 mm to approx. 1 : 3.2, and at 135 mm to approx. 1 : 2.5).
With a +3 diopter, the close-up setting of this lens starts at 33 cm from the front edge regardless of the focal length. Ideal for seamless continuation of the normal close-up range.
The B+W +4 diopter close-up lens is the right power for additional close-up range with the 50 mm lens (up to approx. 1 : 3) when the B+W +2 close-up lens has reached its limit. This is the maximum power for telephoto lenses with focal lengths of 85 mm (to approx. 1 : 2.1) and 100 mm (to approx. 1 : 1.9), but you should stop down to at least f/8.
With the B+W +5 diopter close-up lens, you have reached the most powerful in the B+W close-up lens range. The B+W +5 close-up lens provides seamless continuation from the NL 3 with a 35 mm lens (up to approx. 1 : 3.5). Anyone with a 50 mm lens who can accept a small gap (approx. 1 : 4.4 to 1 : 4) after the NL 2 can continue a bit further into the macro range (up to approx. 1 : 2.6) by using the NL 5 instead of the NL 4.
The +10 diopter of this B+W macro lens goes well beyond the normal range for close-up lenses. You can access the real macro range without an expensive specialized lens and reproduce the very small as huge (approx. 1 : 2 to 1 : 1.5). An aperture of f/8 or f/11 is recommended for good sharpness especially into the corners. It is also ideally suited for digital cameras because of its high power.