s.p.a.s.
Topic Author
Posts: 926
Joined: Sun Mar 11, 2001 2:04 pm

Filter To Correct Orange Effect...

Thu Aug 28, 2003 9:55 am

Hi folks...

Some airports don´t have white tarmac lamps but yellow/orange ones leading to some results I personally don´t like, i.e.


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Photo © Micheil Keegan



I know of a filter which reduces this yellish hue..but don´t know it´s code...anyone there could shed some (white..) light on this?

Thanks

Renato
"ad astra per aspera"
 
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JeffM
Posts: 7569
Joined: Sat May 07, 2005 3:32 am

RE: Filter To Correct Orange Effect...

Thu Aug 28, 2003 9:57 am

Renato,
Not an issue if you shoot digital. Just set a custom white balance. For film, you will need to find out the temperature of those lights.

Jeff
 
s.p.a.s.
Topic Author
Posts: 926
Joined: Sun Mar 11, 2001 2:04 pm

RE: Filter To Correct Orange Effect...

Thu Aug 28, 2003 10:02 am

Thanks so far Jeff...and I´m (still) making film...
"ad astra per aspera"
 
photopilot
Posts: 3101
Joined: Mon Jul 15, 2002 11:16 am

RE: Filter To Correct Orange Effect...

Thu Aug 28, 2003 12:49 pm

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.

Good luck
Steve
 
s.p.a.s.
Topic Author
Posts: 926
Joined: Sun Mar 11, 2001 2:04 pm

RE: Filter To Correct Orange Effect...

Fri Aug 29, 2003 10:53 pm

Hi Steve..

Thanks for the valuable information mate... Will take a closer look on those 80´s series filters

Rgds

Renato
"ad astra per aspera"
 
mas a330
Posts: 1476
Joined: Tue Mar 21, 2000 11:12 pm

RE: Filter To Correct Orange Effect...

Sat Aug 30, 2003 12:20 am

I changed the colour balance of the photo above to about 9300K and got quite good result.

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