Secondary Colour Grading > Creating a Secondary by Keying a Range of Colours > Using the Diamond Keyer to Extract a Key >

# Using the Scale and Skew Controls in the Diamond Keyer

With the Scale control, you can scale the chrominance Softness and Tolerance Diamonds to increase or decrease the range of colour to isolate. With the Skew controls, you can skew the chrominance Softness and Tolerance Diamonds horizontally and vertically relative to the orientation of the selected diamond to increase or decrease the range of colour to isolate.

NoteTo zoom in or out on the hue cube, right-click and drag to the right to zoom in or drag to the left to zoom out.

(a) Tolerance and Softness selectors(b) Scale slider(c) Skew Horizontal slider(d) Skew Vertical slider(e) Horizontal control vertices(f) Vertical control vertex

To scale the range of colour:

1. View the secondary in the Player. Press F11 to toggle to Secondary view.

   In Secondary view, you can see the effect of the modifications you make while you fine-tune the key.

2. Click the Tolerance button or Softness button to select the Tolerance Diamond or Softness Diamond.
3. Drag the Scale slider to the left or to the right to decrease or increase the range of colour to isolate.

To skew the range of colour horizontally:

1. View the secondary in the Player. Press F11 to toggle to Secondary view.

   In Secondary view, you can see the modifications you make to the chrominance range while you fine-tune the key.

2. Click the Tolerance button or Softness button to select the Tolerance Diamond or Softness Diamond.
3. Depending on the orientation of the diamond, drag the Skew slider to the left to horizontally decrease the range of colour to isolate or to the right to horizontally increase the range of colour to isolate.

To skew the range of colour vertically:

1. View the secondary in the Player. Press F11 to toggle to Secondary view.

   In Secondary view, you can see the modifications you make to the chrominance range while you fine-tune the key.

2. Click the Tolerance button or Softness button to select the Tolerance Diamond or Softness Diamond.
3. Depending on the orientation of the diamond, drag the Skew slider to the left to vertically decrease the range of colour to isolate or to the right to vertically increase the range of colour to isolate.