Glow
 
 
 

The Glow lets you generate subtle gradations of light in your composition.

The Glow tool has the following parameters:

To set the threshold:

  1. Do one of the following:
    • Drag the trackball towards the color you want to set as the threshold.
    • Drag any of the red (R), green (G), or blue (B) channel fields to the right to increase, or to the left to decrease the threshold uniformly on all three channels. Alternatively, you can also drag the luminance (L) field to achieve the same result. Select the Reset button to return all values to 0.
    • Select a single channel that you want to modify by deselecting the Lock button to the right of the channel, then increase or decrease the threshold. The other channels are not affected. However, the overall luminance field updates to reflect the change. Select the Reset button to return all values to 0.
    • Type values into the channel fields and press Enter. In the case of modifying all channels uniformly, when values are typed into any field, the other fields update. The luminance field will update regardless of which method is used to modify the values. Select the Reset button to return all values to 0.

To set the gain on a glowed portion of an image:

  1. Do one of the following:
    • Drag the trackball towards the color you want to add or decrease gain to.
    • Drag any of the red (R), green (G), or blue (B) channel fields to the right to increase, or to the left to decrease the gain uniformly on all three channels. Alternatively, you can also drag the luminance (L) field to achieve the same result. Select Reset to return all values to 0.
    • Select a single channel that you want to modify by deselecting the Lock button to the right of the channel, then increase or decrease the gain. The other channels are not affected. However, the overall luminance field updates to reflect the change. Select the Reset button to return all values to 0.
    • Type values into the channel fields and press Enter. In the case of modifying all channels uniformly, when values are typed into any field, the other fields update. The luminance field will update regardless of which method is used to modify the values. Select the Reset button to return all values to 0.

To set the X or Y Radius to the edge of a glow:

  1. Do one of the following:
    • Drag any of the red (R factor), green (G Factor), or blue (B Factor) channel fields to the right to increase, or to the left to decrease the radius uniformly both the X and Y radii. Alternatively, you can also drag the Master field to achieve the same result on all color factors.
    • Type values into the channel fields and press Enter. To deselect the lock on any parameter, click the Lock button.