Color Shift Removal
I do timelapses and use a strong ND filter. The filter causes a strong color shift. What would be the most sensible solution to eliminate this color shift in all images? Making a user style or layer with the necessary adjustments and then applying it to all the images?
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You could experiment with what tool(s) will correct the cast for you - a possible starting point, I'd suggest, would be the master section of the Colour Balance tool. I wouldn't suggest the white balance tool, because presumably the WB would vary from one shoot to another anyway. You could also try the individual colour section of the curves tool. Once you have found something that works (perhaps a combination of more than one tool) you could indeed see it as a style.
Ian
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Thank you Ian for your reply. What if I photograph Kodak Color Separation Guide and Gray Scale (Q-13, 8" Long) with and without Nd filter and then do color adjustment with pipette to meet white grey and black? But what would help to know the adjustments values for the lens without nd
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I assume that if you use the guide as you suggest, that could give you a good result for that particular shot, and for those particular lighting conditions. But I think that you would run in to the problem that this would give you a WB setting that would only suit that shot. So you might shift the WB (say) from 5600K to 4590K. But if you saved that as a styler, eve4ry shot would be adjusted to 4590K. You don't get the option of adjusting the WB value by a particular increment. (So 5600 to 4590 would be an adjustment of -1050K, but you can't do that. That is why I suggested other tools.
Ian
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SFA
I think that the color shift must be the same. I cant imagine that the shift will vary. I never used LCC, I will try to sort it out.
Thank you
Anatoliy
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Ian,
I don't understand what is the link between color cast and incrementing the WB?
Thank you
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Well, if you used a grey card and colour picker to correct the colour cast, it would change the WB and the Tint to give you a neutral grey. My point is that the new values of WB and tint required to do that would be different for a different image, if they started with different values (perhaps because of different lighting conditions). But if you corrected the cast with a combination of the colour balance tool and perhaps the curves, the adjustment you would need might be the same in every case.
And maybe SFA's idea of the LCC feature would also work.
Ian
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Ian Wilson
I have to be honest that I didn't know LCC tool but as the name says it seems to be made for it. is there any good tutorial for this tool? It would be good to hear the product manager/developer from CO.
Best
Anatoliy
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