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Subject: Re: RAW and Kelvin Temp.

Shade has more blue light in it. No direct sun, but a lot of blue light bouncing around the atmosphere, so it needs more correction. Remember it is the color of the light falling on the subject, not the color of the subject that is being measured. If you tell your raw converter (the JPG converter in the camera, or Camera Raw) that the image was shot under a 7500 degree light the convert adds more yellow to the image to counter the higher temperature. If you told it that you shot it at 3200 (when the actual light was 5500) you would see that the image would appear way too blue because the converter is over compensating based on what you told it. Think of it the same way you think about color film types. In tungsten or halogen lighting you have ot use a tungsten balanced film or put a blue (80A) filter over the lens to compensate for the difference between the light source and the film sensitivity. By telling the converter that the light is 3200 degrees you are telling it to put a blue filter over the image to
bring it back to neutral. If you are shooting in a really blue light (shade setting) you need to add a yellow filter (such as an 85) or tell the raw converter that the light is too blue and to compensate with some yellow.



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