Here is my set of colour correction Lee filters.
They are in fair condition. Have scratches though this was not evident on photos. Pack of four comes in Lee fabric pouch.
The 81 Series of filters control the bluish colouration that affects daylight film. They can also remove excessive blue from the effects of electronic flash. Good for general scenics when the photographer wishes to remove the bluish cast from open shade or just add warmth to the photograph.
Lee resin filters are 4 x 4″ (100 x 100mm) x 2mm thick
– 81 decreases colour temperature 100K
– 81B decreases colour temperature 300K
– 81D decreases colour temperature 500K
– 85C decreases colour temperature 2100K
Using tungsten film in daylight will produce a blue 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. Lee polyester filters measure 4 x 4″ (100 x 100mm). Filter factor 1.8 ( 2/3 stop)