A B + W 103 ND Gray Filter has big advantages for your photos. You will find all of these benefits in the name of the filter. ND stands for Neutral Density, or neutral density. The filter is neutral gray, so that the light that it transmits is only influenced in intensity, not in color. That way your photo gets a nice balance, where the colors are not toned.
A second function of the filter is the use of slower shutter speeds. In this case the number 103. With this filter you can use 3 stops longer shutter times. The filter allows less light through, so you can get away with this. When you extend the shutter speed, you can take photos of a waterfall, where the water slides down smoothly, instead of the violence with which it usually thunders down. You can also photograph interesting moving scenes without overexposing.