B + W 55mm Basic 701M 0.3 1-Stop MRC Graduated Neutral Density Filter

The neutral gray half of this graduated filter with a transmittance of 50% (1 f-stop) darkens the subject area in question by one f-stop without changing the color. For example, if the sky is too bright relative to the landscape, this is the ideal value for good cloud drawing and to prevent the blue sky from fading due to overexposure.B+W graduated neutral density filters are often used in landscape photography in order to avoid an overexposure of the sky with a correct exposure of the ground. The filters are colored neutral gray on one half with a smooth transition into the neutral clear filter half. With threaded filters the rotatable mount allows an exact horizontal alignment.The high-quality glass substrate of the B+W ND filters 701 is absolutely plano-parallel and finely polished. This guarantees for long lasting high optical quality versus easily scratchable plastic substrates. A B+W graduated ND filter is mainly used to compensate for a sky that is too bright compared to the dark foreground. For exposure metering, the camera or hand-held exposure meter should be pointed down towards the ground that is to have the correct exposure without the graduated filter. This almost always produces the ideal effect automatically.Any increase in exposure to compensate for the absorption in the dense part of the graduated filter should be low so as not to weaken the filter effect too much!Additional InformationThe gray gradient is applied by means of thin-layer technology. The special coating process requires a special masking. This is associated with certain manufacturing tolerances, with the result that the graduation boundary is not exactly parallel. Because this transition is outside the focus range, the effect is not visible and there is no static transition.