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Color correction advise most appreciated!!
hello, adrian here. firstly thank you, i have learned a lot on here already. i wonder if anyone could say a few words about a problem i am having…
i am trying to color match a 5dmkii with an iphone 4. the ‘bands’ i have indicated are thinner on the 5d and fatter on the iphone. i cant color correct the two to match. i thought if i could fatten these bands on the 5d, it might do it. i come from an audio background and thought some kind of equivalent to compression may be the answer.
i am sure the iphone guys have applied all sorts of trickery, secondary color correction? and other processing.
the main problem seems to be skin tones.
any ideas? many thanks.
ps. the iphone is actually the one that looks perfect color wise. i got the 5d background scene to look perfect, but the skin tones are now yellowish. yuk!
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3 Replies
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May I suggest posting reference frames, not just the scope outputs? Since we’re presumably looking at the scopes for two different (but related) images, we can’t really give meaningful advice without seeing the images themselves.
[adrian sinclair] ” i come from an audio background and thought some kind of equivalent to compression may be the answer.”
Compression is temporally sensitive (attack & release time) — this doens’t really apply to video. However, the overall idea of stretching or squeezing the dynamic range is a good way of thinking about it. With video, this can be accomplished with curves controls (drawing a graph to define a function that map input intensities to output intensities) or with levels adjustments or traditional telecine color controls (redefining the black, white, and gray points).
[adrian sinclair] “ps. the iphone is actually the one that looks perfect color wise. i got the 5d background scene to look perfect, but the skin tones are now yellowish. yuk!”
Color correction is rarely a one-pass process. If you have a good overall look that fails in the skin tones only, you can use secondary color correction, limited to skin tones only, to fix it.
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thanks for the reply….
i tried adding blue to fix the yellow skin but no luck there.
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Pick a reference color like the tone of the wall to match (the iphone is more blue, btw) but using scopes-only is a little misguided; the images are not near enough in angle to match purely from the scopes. The iphone image is far more in the shadows for instance.
I would try to match the iphone to a clip on the 5d from a similar lighting or angle. This will help you make some decisions about there being color cast in the shadows, for instance.
The iphone is, on the vectorscope, much more saturated. I would drop the saturation until the general size and strength of the vectorscope matches the 5D.
Although I could go on forever, your best bet is to look up tutorials. This is a decent place to start:
https://www.youtube.com/watch?v=WPQDBefuR20
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