Photopilot From Canada, joined Jul 2002, 2937 posts, RR: 18
Reply 3, posted (11 years 10 months 2 weeks 18 hours ago) and read 1401 times:
For color correction from 3200K Tungsten lighting to Daylight balance film (5200K) you need to use an 80B filter. There is also an 80A and an 80C which are slightly lighter and darker respectively.
You must also be aware that some airports are using a Sodium Vapour type lighting (which also looks yellow) for economical reasons, but this Sodium lighting is almost impossible to filter correctly because of it's very narrow light spectrum.
Basically, to eliminate yellow cast, you need to add either Blue or Cyan filtration. A color temperature meter which also gives color correction factors is the only real way to get accurate results with film. Of course if you have the meter, you also need a box full of CC filters to use with the readings.