B+W Graduated ND Filter 702 as Sheet Filter 100 x 150 x 2 mm. B+W graduated ND filters are used for the darkening of the sky or the foreground. Each half of the filters are coloured neutral gray with a smooth transition into the neutral filter half. Rectangular sheet filters can be rotated by means of a compendium in order to adapt the graduation to the horizon.
The glass substrate of the B+W ND filters 701 and 702 is a sanded and finely polished filter disc. This guarantees a long-lasting high optical quality. The ND gradient is specially evaporated by means of thin layer technology. The below values refer to the dark edge area of the filters: 702 +2 f-stops (25 % transmission). Thanks to the glass substrate the filter discs are stable in shape and cannot distort. Compared to plastic material they are more resistant against scratches, break-proofly supplied in a tinplate case.The graduated ND filters are provided with a high quality MRC coating. MRC (Multi Resistant Coating) coated filters have an MC layer, ensuring a high transmission and a maximum anti-reflective surface. Scattered light is eliminated, leading to brilliant colours and high contrasts. Additionally, MRC is dirt and water repellent and makes cleaning easier.
B+W Graduated ND Filter 702
Due to the twice as strong light attenuation by two fstops (transmission 25 %, max. 2 f-stops) this graduated filter could lead to quite dramatic effects. Very high-contrast landscape motifs without loss of definition become possible. The graduation zone allows some degree of tolerance, but for a natural transition the horizon line should not be positioned too far from the center of the image.
Size: 100 x 150 mm
Thickness: 2 mm
Suitable for compendia with a filter channel width of 100 mm and a thickness of 2 mm. e.g. LEE, Cokin Z