B+W 52 mm #120 Neutral Density (ND) 6.0 Extra Wide Glass Filter
A B&W 52 mm #120 Neutral Density 6.0 Extra Wide Glass filter has several uses and offers the possibility to achieve otherwise unachievable results. ND filters appear grey and reduce the amount of light reaching the film. They have no effect on color balance.
B&W Extra-Wide's are special filters for wide-angle lenses. In order to prevent vignetting, the accessory thread on the front is larger
Neutral Density filters have four main uses
- To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars
- To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background
- To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situations
- To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure
Neutral Density factors
- ND.3 (exposure adjustment = 1 stop, reduces ISO 1/2)
- ND.6 (exposure adjustment = 2 stops, reduces ISO 1/4)
- ND.9 (exposure adjustment = 3 stops, reduces ISO 1/8)
- ND 1.8 (exposure adjustment = approx. 6 stops, transmits 1% of light,)
- ND 3.0 (exposure adjustment = 10 stops, transmits 0.1% of light)
- ND 4.0 (exposure adjustment = 13-2/3 stops, transmits 0.01% of light)
- ND 6.0 = (exposure adjustment = approx. 20 stops)
| Type | #120 Neutral Density |
| Size | 52 mm Extra Wide |
| Grade | 6.0 (exposure adjustment = approx. 20 stops) |
| Filter Factor | Not specified |
| Multi-Coated | No |
| Rotating | No |
| Effect | Reduce the amount of light reaching the film |
| Application | To use high speed films in bright sun |
| Color Temperature | No change |
| Construction | Schott Glass |
| Front Filter Thread Size | 67 mm |
| Front Lens Cap Size | 67 mm |
- Ten-Year Warranty
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