Coral Filters can be used as general warm-up filters, or provide special effects. The Lee Coral Filter is a pinkish warm-up filter, redder than the 81 series. As the number increases, the amount of colour temperature correction increases.
The Lee 81B Col Temp Correction Resin Filter is a light-balancing filter used to convert the colour temperature of a light source.
Lee FL3600-B, for Warm White 3600°K. When using a flash: use 1/2 CTO + Plus Green over flash (approximate exposure increase = 1 stop).