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gennadym
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wrong white balance in NEF files (Nikon D70 RAW)

Apr 9, 2007 11:07 AM

Hi
I have a problem with NEF files: I shoot them with white balance set to Cloudy (6500K), however, in lightroom the white balance is shown as 5450K.

There is a color shift because of this:
When I leave the white balance at "As shoot" the image appears OK, however, changing white balance to "cloudy" which is supposed to do nothing, makes the image warmer, obviously because Lightroom believes that the image is shot at 5450K and converts it to 6500K, e.g. makes it warmer, while the image is already 6500K. Changing the setting to, say, "shadow", makes it even warmer.
Of course I may try to correct the WB "blindly", disregarding the temperature value, but that's annoying.
The camera is Nikon D70, unpatched.

Did anyone have the same symphtom?
Is there any fix or a workaround?

Thank you,
Gennady
 
Replies
  • Currently Being Moderated
    Apr 9, 2007 11:29 AM   in reply to gennadym
    First, the WB is only an EXIF suggestion and not at all accurate. 2nd, LR (like ACR) uses two profiles so there's some disconnect in what the actual CCT Kelvin scale produces. Third, there's no reason to believe that the Kelvin numbers recorded are correct and worse, many colors of white can correlate to the same Kelvin numbers. Since this doesn't affect the raw data, its only a suggestion (and in the past, Nikon has gone out of its way to hide this), I'd just ignore it anyway. As shoot should be the right answer (more or less) anyway then you can tweak the WB any way you wish. The raw file is Grayscale data. The only thing that affects it is exposure and ISO.
     
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    Apr 9, 2007 1:01 PM   in reply to gennadym
    As Andrew indicated, it often doesn't work "that way". I find that "Auto" frequently does better than the camera, which I leave also on Auto for casual shooting. <br /> <br />But I am also inclined to take a WB reading from one shot, see how it looks, and then use that for all pix in the same vicinity, time of day, etc. etc. <br /> <br /> <span style="color: rgb(102, 0, 204);">John "McPhotoman"</span> <font br="" /></font> color="#800000" size="2"&gt;~~ John McWilliams <br /> <br /> <br /> <br />MacBookPro 2 Ghz Intel Core Duo, G-5 Dual 1.8; <br />Canon DSLRs
     
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    Apr 9, 2007 1:03 PM   in reply to gennadym
    gennady m:

    Please perform a careful reading of Andrew Rodney's post. ACR and Lightroom use a *number* for the Kelvin value which should make the image look more or less correct. This has been pointed out by Thomas Knoll a number of times on the Camera Raw forum.
     
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