Lumetri basic questions

Question

I read somewhere that skin tones should be in the medium exposure range on the IRE scale.

1. How do you know what the skin tones are within the Waveform (Luma)? Do you just need to look at the Program window and compare the location of the skin tones to what is showing in the Waveform (Luma)? Is there another way of doing this? A more precise way?

2. Since the sliders within the basic corrections tab affect the shot globally, do you just do your best to make sure that information shows up in the Waveform (Luma) in the area where skin tones are in the Program window? OR is this best handled with a mask?

Thanks in advance.

Meg The Dog · Accepted Answer

I read somewhere that skin tones should be in the medium exposure range on the IRE scale.

As a very general rule of thumb, that is not a bad place to start but it is very scene dependent.

1. How do you know what the skin tones are within the Waveform (Luma)? Do you just need to look at the Program window and compare the location of the skin tones to what is showing in the Waveform (Luma)? Is there another way of doing this? A more precise way?

After a while of doing color correction you will be able to read the waveform for scene parts, but until then - apply a crop effect to the scene (which you will remove later) and crop around to just the skin tone area(s) you want to correct for. Crop around a face, for example, and color correct it so that it looks pleasing to you, then remove the crop effect. Generally, if the main subjects skin tones are correct (pleasing) - and their eyes are in sharp focus - the overall scene will look correct.

2. Since the sliders within the basic corrections tab affect the shot globally, do you just do your best to make sure that information shows up in the Waveform (Luma) in the area where skin tones are in the Program window? OR is this best handled with a mask?

You would use a mask on the Lumetri effect when you need to correct the skin tones independent of the background scene - for example, making a face brighter and more visible while keeping the rest of the scene very dark.

MtD

chrisw44157881 · Answer

if you apply secondary color picker, you can isolate just the skin and see it in scopes. the vectorscope shows the hue and saturation on the skin tone line @ 1100 o clock. the waveform luma scope would show ire values, usually 40-70ire is what you want depending on if you have already normalized out of log based footage. as to if you should globally correct for skins tones before going secondary, depends on how well the shot is lit and how many temp color sources.

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