I'll start with a quick caveat: although I've been scanning and using Photoshop for a few years, I've only recently taken the digital plunge with a D100... so I suspect I may have missed something very obvious here. On the other hand, I'm hoping there will be someone on the list who can point me in the right direction.

I'm having trouble adjusting white balance settings in Capture 4. At the moment (as I say, I'm in the early stages of getting to know my D100), I'm using standard white balance settings (cloudy, flash, whatever) and then batch processing in Capture. For the daylight settings this seems to work fine - for example, if I shoot with the cloudy setting and open the image in Capture, the camera wb is shown as cloudy. I can fiddle around to my heart's content, change my mind and select 'cloudy' from the drop down menu, and the image reverts to exactly the same state as if I'd selected 'recorded value'.

The difficulty comes when I shoot with the D100 set to 'flash'. Aside from the fact that this seems to result in unnaturally warm images, selecting 'flash' from the drop down menu after I've fiddled around doesn't return the image to its original state at all, but introduces a rather unpleasantly strong yellowish cast. To get back to where I started I have to select 'recorded value'. What's more, although the flash setting claims to represent a colour temperature of 5400K, selecting another wb setting - daylight / sunny, for example, at a nominal 5200K - and moving the slider to 5400K doesn't achieve anywhere near the same result.

None of these problems seem to apply when I use the daylight white balance settings, nor do they seem to happen in Photoshop CS (although the colour rendering of RAW files seems different in CS and the default colour temperature values aren't the same either, but that's another story).

Can anyone shed any light on this? Why does Capture's 'flash' wb setting produce a completely different result from the camera's 'flash' setting? Why do neither appear to match Nikon's nominal flash colour temp of 5400K? Am I missing something?

Apologies again for the very basic question. I'm stumped, and any advice to point me in the right direction would be gratefully received.

With thanks in advance

Seb Rogers

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