Light Balancing Filter Kit, made up of the following filters:
81a: Light Amber / Yellowish filter with conversion 3400-3200k, exposure +1/3. Warms up the look by reducing the blue cast. This filter is used for more subtle changes in colour balance and is often known as a light balancing filter (rather than a conversion filter), as it shifts the colour temperature in smaller degrees to balance the colour of the light to the colour sensitivity of the film.
81d: Light Amber / Yellowish filter with conversion 3700-3200k, exposure +2/3. This light amber/yellowish filter will make the appearance warmer.
82a: Light Blue filter with conversion 3000-3200k, exposure +1/3. This filter cools lighting situations, but not as dramatically as the 80 series. This light blue filter will make the appearance cooler.
82c: Light Blue filter: Conversion 2800-3200k, exposure +2/3. This filter cools lighting situations, but not as dramatically as the 80 series. This light blue filter will make the appearance cooler.