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Auto-White balance is off - setting somewhere?

lajolla

LaJolla, US
388 posts

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""RE: Auto-White balance is off - setting somewhere?""

lajolla Silver Member Nikonian since 03rd Nov 2005
Wed 16-Oct-13 06:24 PM | edited Wed 16-Oct-13 08:08 PM by lajolla

Your d800 and d4 are clearly generating different white balances with your raw nef images of the same subject matter under the same illumination using the same lens and the same importing software. The variation in mired degrees kelvin of your d800 clearly shows a shift toward blue on the standard blue to amber mired-axis. I agree with others that the pix you have posted, as rendered, show the d800 to be farther off-axis toward the blue than the more amber-shifted d4.
There are possibly also a number of other variables (that you have not specified) regarding your camera metering and camera focus settings of your d4 and d800, that could be introducing this blue shift with your d800, and not with your d4?
I would suggest setting a white balance manual preset for both your d800 and d4, with the white card placed under the same general illumination. Easiest is to place the white card, if outdoors, within the shade, so no direct sunlight illuminates the card. You will be creating two different manual white balance presets from the same white card under the same kelvin illumination. Once you have saved these presets to your d800 and d4, then at your leisure, take photos with both cam bodies using the same lens of any subject matter (preferably a scene under the same kind of skylight shadowed illumination you have created your manual presets for - but it doesn't matter - we are just trying to test your cam bodies' white balance algorithms to see if the same image under the same degree kelvin light produces a similar white balance for the different bodies, all other things being equal)
Assuming you have used the same camera metering and focusing settings for both d800 and d4 manual white balance presets, the images you create on the d800 and d4 at those identical white balance presets should produce raw nef images - such that when those images are rendered through lightroom or nikon software, the images from the different bodies should have a very close white-balance resemblance?
I would also urge you to record duplicate jpeg optimal fine images along with the nef images. And to transfer those same optimal fine jpeg duplicates through your lightroom and/or nikon software to your computer along with the raw originals. The jpeg fine images will have all of your nikon proprietary manual preset white balance settings 'baked-in' and your image importing software should not touch these jpeg white balance settings on import. Your imported jpegs should have the approximate same white-balance as well as your raw nef rendered imports.
If your white balance is still greatly different between your d4and d800 images with your software imported jpegs - just go back to your d4 and d800 and reset all your cam settings to factory default, and try this same manual white balance preset setting test once again. But remember, there will always be slight white balance differences even among the same nikon cam body models, as well as between entirely different cam body models.
I rent different bodies and different lenses all the time, shooting with manual white balance preset using strobes and a mix of sunlight and skylight and reflectors. But even using on-location manual white balance presets based on either white or grey card references always produce slight, but still noticeable white-balance differences between flesh tones from the same model cam bodies. good luck

This is a hot, active topic! Auto-White balance is off - setting somewhere? [View all] , Ferguson Silver Member Fellow Ribbon awarded for the generous sharing of his high level expertise in the spirit of Nikonians , Sun 13-Oct-13 01:17 PM
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