white ballance/temp

Archived from groups: rec.photo.digital.slr-systems (More info?)

Don wrote:
> Folks
>
> I shoot raw with a 20D and generally leave it set on auto white balance.
> However, with flash I change it to flash as it seems to give better
> performance. When processing the RAW file I use BreezeBrowser and am very
> happy with it. If photographing something important I put a grey card in
> the first few frames and later use the picker in Breeze to adjust the colour
> temp by selecting the grey card. This gives great results, however, I would
> like to be able to measure the colour temperature when using this method.
> One way is to input colour temperatures till they match the eye picker but
> this is long winded. Does anyone know of a program that measures the colour
> temperature of a raw file?

I use Photoshop & ACR. When I use the picker, for example on a grey
card or GretagMacbeth card or some grey area, ACR identifies the Colour
Temperature (as a 4-digit number, presumably Kelvin), and the settings
for the Tint slider.

--
Barry Pearson
http://www.barry.pearson.name/photography/
http://www.birdsandanimals.info/