nd filter造句

• To counter this problem, some manufacturers have created variable ND filters.
• The attenuation values of ND filters are specified logarithmically.
• One way to mitigate this problem is by tilting the ND filter stack.
• To counter this, some manufacturers have produced high-quality extreme ND filters.
• Another type of ND filter configuration is the " ND-filter wheel ".
• In more modern times, the use of graduated ND filters was popularized by Galen Rowell.
• In practice, ND filters are not perfect, as they do not reduce the intensity of all wavelengths equally.
• An inexpensive, homemade alternative to professional ND filters can be made from a piece of welder's glass.
• To help extend the exposure range, some smaller sensor cameras will also incorporate an ND filter pack into the aperture mechanism.
• To create ethereal looking landscapes and seascapes with extremely blurred water or other motion, the use of multiple stacked ND filters might be required.
• Typically, one can expect about 5-10 % variation of the attenuation across a ND filter, unless specified otherwise to the manufacturer.
• Some modern automatic point-and-shoot cameras do not have a diaphragm at all, and simulate aperture changes by using an automatic ND filter.
• Assuming that the absorption of the metallic ND filter is negligible, the order of the ND filter stack doesn t matter, as it does for the absorptive filters.
• Assuming that the absorption of the metallic ND filter is negligible, the order of the ND filter stack doesn t matter, as it does for the absorptive filters.
• About 4 % is reflected from the air / glass interface and several wedges can be used to greatly attenuate the beam to levels that can be attenuated with ND filters.
• Since these filters reflect light, one must be careful when stacking multiple ND filters, since multiple reflections among the filters will cause a ghost image to interfere with the original beam profile.
• The advantages to this are that you get multiple ND filters in one package, the disadvantage is a loss of image quality caused by both using two elements together and by combining two polarizing filters.
• ND filters find applications in several high-precision laser experiments because the power of a laser cannot be adjusted without changing other properties of the laser light ( e . g . collimation of the beam ).
• More significantly, most ND filters are only specified over the white-hot metal or glass ), which emit intense invisible radiation, since the eye may be damaged even though the source does not look bright when viewed through the filter.
• With use 1 / 2.3 " small sensor as commonly is used by bridge cameras, the camcorder has 20x optical zoom in a compact body with dual XLR audio inputs, Internal ND filters and separate control rings for focus, iris and zoom.