Why does WB matter when raw shooting ?

[braeside]

You are missing the snow in the borders tonight David.

[pakodominguez]

I can tell you for sure than using an 80B blue filter and daylight WB gives 1 to 1.5 stops more highlight clipping adjustment than using AWB, with all KM/Sony cameras to date. I use 80B/tungsten and it works.

With Tungsten and Fluorescent lights, right?

[alphaPDX]

I was caught off guard when my A200 slowed down while shooting RAW recently. Turned out I had left WB-Bracket on from shooting jpgs earlier in the day, and it applied same to three RAWs at a time. That really times out the A200 in a hurry! I was surprised by that setting not being overwritten when shooting RAW, but will now consider it a 'feature' & read my back panel a bit more carefully in the future..

[David Kilpatrick]

I can tell you for sure than using an 80B blue filter and daylight WB gives 1 to 1.5 stops more highlight clipping adjustment than using AWB, with all KM/Sony cameras to date. I use 80B/tungsten and it works.

With Tungsten and Fluorescent lights, right?

I have not tried a fluorescent correction filter, since there are so many types and you need one exactly matched to the lights in use. I only use the 80B when shooting by tungsten light (normally tungsten halogen or Halostar modelling lamps) and only in the studio; for any quick shots 'in the field' I just use preset or auto white balance. For fluorescent light, or energy-saver bulbs, I use AWB (the preset is very rarely correct, because it applies only to one type of fluorescent light). If you want precision correction for various types of light, Singh-Ray used to make such filters; you could correct for anything from mercury vapour to named types of building floodlighting.

David