Re: Color Temp w/ Digital
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Can you qunatify in some way what you consider siginificant color shift in digital images.
I had not considered this in the past; now I am tempeted to do some color chart comparisons and get a handle on color shift in terms of adverage deltaE values.
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Almost anything you do to modify a light will cause a CT shift. Unless your shooting Pantone charts I don't think there is much to worry about. A CT meter can be useful in many scenarios, especially with mixed lighting or with a setting sun, but nothing beats seeing the scene on a computer's screen & I imagine most photographers still aren't using CT meters.
Outside of a very few picky clients, absolute color accuracy has never been much of a consideration. If your client really needs to match a color, they almost always will be tweaking it in post. EPR 64 has a reputation of being the most color accurate emulsion, but how many of us always shot that film. Digital's sensitivity reminds me of EPR, except we almost always had to filter the chrome.
Do you really want perfect color & if so, what is perfect color? Helmut Newton used to shoot any film other than Kodachrome, dismissing it because it "looks too pretty". Someone once wanted to show Melvin Sokolsky how to emulate Velvia with Photoshop, but he responded "I don't want Velvia, I want Melvia".