User Manual

 HSL: In many instances, the HSL keyer is not as immediately accurate as the 3D keyer,
and will include a broader portion of the image for any given sample. On the other
hand, if the 3D keyer is not giving you satisfactory results for a particular shot, the HSL
keyer can sometimes do a better job. Because of its interface, the HSL keyer makes it
easier to “fine-tune” the range and softness of each individual color component that’s
sampled, in order to improve the result. The HSL keyer also gives you the option of
disabling color components that you don’t want to contribute to the final key, so that
you can pull a saturation-only key, or a hue-only key, for instances where that may solve
the issue at hand.
 RGB: The RGB keyer shares many of the limitations and advantages of the HSL keyer,
but since you’re sampling and adjusting red, green, and blue color components, the
specificity with which you can fine-tune the resulting key works much differently.
 LUM: The LUM keyer works specifically to isolate parts of the image based on image
tonality, lightness, or darkness. This is the perfect tool when you’re trying to isolate
highlights or shadows in the image, which let you solve a multitude of different creative
and technical issues. The LUM keyer is identical to using the HSL keyer with the Hue
and Saturation qualifier controls turned off.
The following two sections provide an overview of how to use the 3D and HSL keyer modes in
DaVinci Resolve.
Basic Qualification Using the 3D Keyer
The 3D Qualifier mode offers a fast, simple way of pulling a key to isolate a range of color in the
image, by drawing lines over the parts of the image you want to key. Each line you draw over
the image adds to or subtracts from the cloud of values you’re carving out of a three-
dimensional representation of all available colors; you don’t see this representation, but this
“under the hood” functionality is what gives the 3D keyer its name.
The 3D keyer is a general-purpose keyer, letting you isolate any color you like. However, the 3D
keyer is not good at pulling luma-only keys. If you’re looking to isolate a range of luma values in
the image, you should use the LUM mode.
To use the 3D mode to isolate a subject in the Viewer:
1 Open the Qualifier palette, choose 3D from the mode drop-down, and click the
eyedropper.
2 Click and drag across the part of the image you want to isolate to draw a line. Lines that
add to the key are colored blue.
Drawing a line to create a key using the 3D qualifier
3 To see the key you’re creating as you work, click the Highlight button in the Viewer
Options toolbar at the top of the Viewer.
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