Hi Malcolm, If you are shooting raw files then the custom white balance is probably not the approach I would adopt. Get a Macbeth chart and shoot that in the lighting setup at the point of interest. Then use the eyedropper tool in your conversion software to batch neutralise - essentially creating a custom white balance but at the conversion st age. This is essentially what you are doing with custom white balance. The Macbeth chart has a greyscale on it so you would be able to use it across a range of lighting values.; it also has better neutrality. If you look at a range of swatches of the background papers you will see a variance of colour, using this to white balance could result in a cast.
Hope this helps Snowy > Can anyone help me with this one please? The manual says to shoot "a white > subject, just as you would take a normal picture" but how white is "white". > If I'm shooting under studio flash lighting against a typical "superwhite" > paper background, would this suffice? I assume that correct exposure as > determined from an incident flash meter would be requisite but typically the > histogram shows the highlights (ie the white background) falling well short > of 255 - does this matter. I've also seen reference to use of a grey card > (although not in the Canon manual) - help!! > > Malcolm Jeffs > =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
