LLee Filters Canada
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POLYESTER CAMERA FILTERS
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Colour Temperature Adjustment Filters A range of filters which are used to convert the colour temperature of a light source to balance with the film type in use, or to create an intentional warm or cool effect.
These filters reduce light transmission uniformly over the visible region of the spectrum, in definitive steps. Although used mainly in colour photography for reducing light levels without colour change, they can also be used for black and white photography. They are particularly useful for compensating for too much light, in circumstances where changing the shutter speed, aperture or film type is not possible or desirable. For example, exposure time can be increased to achieve special effects when photographing running water and waterfalls etc., without adjusting the aperture. In addition, depth of field can be reduced by increasing the aperture by the stop value of the filter used. For example, if the aperture is required to be f4 yet correct exposure is at f8 and the speed cannot be changed, a 0.6ND will allow the setting of the f4 aperture.
A range of filters developed to provide selected colour temperature adjustments combined with neutral density in one filter.
Flourescent Correction Filters This system offers filter solutions to many fluorescent correction problems. Both colour temperature conversion and green absorption functions are combined into one filter; the filter used will depend on the fluorescent light and film type.
These filters offer a single filter correction from mercury vapour or high pressure sodium lighting to daylight or tungsten film.
A range of filters recommended for use either in front of or behind the lens. They control the spectrum by reducing the transmission at specific wavelengths. They are primarily used to colour balance films, the required filter being determined as a result of tests, or as specified by the manufacturer. They can also be useful for correcting light sources for which no one conversion filter exists, or for adding a deliberate colour bias. The values shown are approximate exposure increases to compensate for the filters used. 75mm x 75mm *** Click on the value to add to Shopping Cart ***
100mm x 100mm *** Click on the value to add to Shopping Cart ***
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