Camera filters Heliopan
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Grey-Dark 58mm ND 0.9
Neutral Density filters are important tools for controlling light reduction. They
permit less depth of field under bright lighting since the aperture has to be
larger and, in addition, they permit long time exposures with stronger ND fil-
ters in sunlight.
With digital imaging over exposure can be avoided resulting in natural color
reproduction. ND gray filters are manufactured from color neutral Schott
glass so they can be used for color imaging. They are available in 3 densi-
ties. Higher densities are available on special order for technical and scien-
tific applications.
On most digicams the imaging sensor is smaller than the 35mm format. This
results in a relatively large depth of field, even with a large aperture opening
this can be disturbing - when eg. A portrait has to be separated from the bak-
kground and the available light requires the use of a smaller aperture, redu-
cing the available light allows the choice of the best aperture. Also with digi-
cams that only operate in full auto mode, the depth of field can be reduced.
Digicams frequently have fewer apertures then film cameras, (eg. 2.8 to 5.6
or 2.0 to 8.0) a neutral density filter allows a much larger choice of exposure
combinations.
permit less depth of field under bright lighting since the aperture has to be
larger and, in addition, they permit long time exposures with stronger ND fil-
ters in sunlight.
With digital imaging over exposure can be avoided resulting in natural color
reproduction. ND gray filters are manufactured from color neutral Schott
glass so they can be used for color imaging. They are available in 3 densi-
ties. Higher densities are available on special order for technical and scien-
tific applications.
On most digicams the imaging sensor is smaller than the 35mm format. This
results in a relatively large depth of field, even with a large aperture opening
this can be disturbing - when eg. A portrait has to be separated from the bak-
kground and the available light requires the use of a smaller aperture, redu-
cing the available light allows the choice of the best aperture. Also with digi-
cams that only operate in full auto mode, the depth of field can be reduced.
Digicams frequently have fewer apertures then film cameras, (eg. 2.8 to 5.6
or 2.0 to 8.0) a neutral density filter allows a much larger choice of exposure
combinations.
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