The Filters We Need With Digital...

Started Oct 5, 2008 | Discussions thread
John Sheehy Forum Pro • Posts: 18,864
Re: The Filters We Need With Digital...

Joseph S Wisniewski wrote:

Two - The 80A "Color Balancing" Filter

Most cameras have sensors that are "daylight balanced". They have
nice, balanced red, green, and blue channel responses in neutral
colored scenes lit by daylight.

Most digital cameras have balanced results with magenta to purplish magenta light.

In the RAW data, most incandescents record white or grey objects as being about equal in red and green, but blue is usually 1.5 to 2 stops weaker. If the sensors were daylight balanced, the red response would be about a stop stronger than the green, and the blue 1 to 1.5 stops weaker than the green.

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John

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