B+W 82mm MRC F-PRO (102) Neutral Density Filter - (Special Order)

B+W Neutral Density filters, usually referred to as ND filters reduce the overall brightness in a scene. They are typically used for two particular applications.

Large apertures can also be used as an interesting creative element; at wide apertures the depth of field is reduced so much that eventually only the main subject will be rendered sharply, whereas the foreground and background will be unsharp. This also focuses the attention on the main subject in a creative sense, and draws the attention of the viewer to it as if by magic. In a high brightness situation however, with high-speed film or a short focal length (with correspondingly higher depth of field), using a large aperture to achieve the desired selective sharpness effect may not be possible without incurring over-exposure. This is where B+W neutral density filters provide the solution. In addition, when the shutter speed is reduced by two or three steps instead opening the aperture for instance, a neutral density filter can be used for equally creative blur effects with moving subjects.