B+W 2 Stop Neutral Density Filter

Product Description Neutral density filters, or grey filters, are used if too much light restricts creative possibilities. They reduce the light in accordance with their density; they therefore allow longer exposure times or more widely opened apertures? These filters are excellent for enabling movement to be captured in an image – by allowing longer exposure times. For example water can appear soft and smoky, rather than frozen in time. Grey filters can create ingenious effects in architecture or urban photography too, with long exposures times of several hours, people walking through the shot are blurred or can even ‘disappear’ completely. This B+W Neutral Density Filter reduces the light by two f-stops (log density 0.6), and it is the most popular ND filter in photographic work. It offers many benefits, for instance f/4 instead of f/8 for selective sharpness instead of a great depth of field, or 1/15 s instead of 1/60 s for a flowing instead of a “frozen” waterfall. It has excellent color neutrality, costs less than the denser filters, and is recommended as part of a basic outfit. The filter factor is 4x. Each glass surface is vacuum coated with one layer of Anti-Reflection coating. This single layer helps to prevent internal ghosting and reflections. It also improves light transmission from approximately 92% (uncoated glass) to over 98%. This filter uses our standard B+W F-Pro filter mount, which has a front accessory thread and is made of brass. Compared to the earlier standard mount introduced in 2001, the F-Pro mount has become thinner. Now it can be used with wide angle lenses, including most 24mm focal lengths on a full frame body, without vignetting. Another advantage of the F-Pro mount is it's modified retaining ring, which is no longer threaded in from the front, but holds the filter glass in place from the back. When removing a filter or lens hood that has been screwed on too tight to the filter, the retaining ring is not at risk of loosening. Box Contains B+W F-Pro 102 ND filter 0.6 E 67mm