B&W 82 mm Graduated #501 Neutral Density (ND) .3 (1-stop) Glass Filter - The neutral gray half of this filter transmits 50% of the incoming light so that it darkens the respective portion of the subject by one f-stop without altering its colors.
Often it is necessary or desirable to balance the light intensity in one part of a scene with another. This is especially true in situations where you don't have total light control, as in bright contrasting landscapes. Exposing for the foreground will produce a washed-out, over-exposed sky while exposing for the sky will leave the foreground dark and under-exposed. This filter enables cloud detail to be kept correctly exposed in the picture.
Determining which graduated neutral density filter yields ideal results for any given lighting situation takes knowledge, experience and a collection of such filters. Choose the filter strength which adjusts the lighting to stay within the exposure latitude (greatest difference between bright/dark values) which still shows details in both of the digital or film medium in use.
Speaking generally, the 2-stop value (ND 0.6 - the filter's clear portion allows 4x more light to pass vs. darkest portion) effectively compensates average bright sky-to-foreground situations.
| Type | Graduated Neutral Density #501 |
| Size | 82 mm |
| Grade | .3 (1-stop) |
| Filter Factor | 1 stop, reduces ISO 1/2 |
| Multi-Coated | No |
| Rotating | No |
| Effect | Balanced light intensity from one part of a scene to another |
| Application | Nature, Travel, Outdoor photography; to maintain light control, as in bright contrasting landscapes; i.e. bright sky, dark foreground |
| Color Temperature | Not specified |
| Construction | CR-39 Acrylic |
| Front Filter Thread Size | 82 mm |
| Front Lens Cap Size | 82 mm |
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Comments about B+W 82 mm Graduated #501 Neutral Density (ND) .3 Glass Filter:
A great quality filter. I shoot architecture, many times rooms have dark floors and bright ceilings, this filter tones it right down, beautiful to use. I liked it so much I bought the #502 as well. Normally the lights are up high so it adds to the problem of light of white ceilings. These filters are a great counter balance.
Comments about B+W 82 mm Graduated #501 Neutral Density (ND) .3 Glass Filter:
This is a high quality product.
Displaying reviews 1-2