Using tungsten film in daylight will produce a bluish cast in the photograph. The 85 series will produce natural colours when shooting with tungsten film outdoors. A #85 filter will decrease the colour temperature from 5500K to 3400K and produce slightly cooler results than an 85B. This filter combines an 85B conversion filter with a Neutral Density .6 (two stops) filter.
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Commonly used for a noticeable increase in contrast with black and white films. Especially useful for clear contrast between blue sky with clouds and foreground. It is also suitable for landscapes and nature scenes. Lee resin filters are available in 4 x 4" (100 x 100mm) x 2mm thick. Filter factor is 2 (+1 stop)
A green filter that produces very light foliage on black and white film. Also used for contrast effects (lightens green/darkens red). Lee resin filters are made from lightweight, optical polymeric materials. Filter factor 6 (+2 2/3 stops).
A series of filters that add a white misty, dreamlike effect to portraits and landscapes. The effect it highened by backlighting. Fog filters come in five strengths from Fog 1 (mildest) to Fog 5 (strongest) and my be used alone or in combination of 2 or more for extreme effect.
Lee Blue 25 Resin Colour Correction Filter.
These filters 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.