nxtr20.pdf

Using Selection Tools - Plus and Minus Brushes

Request

How do I use the Plus Brush and the Minus Brush.

Response

Once image enhancements have been specified, the Plus Brush can be used to apply

those enhancements to specific portions of the image. Similarly, the Minus Brush can be

used to remove those enhancements from specific portions of the image.

Before

The brightness of the sky portion is perfect,

but the building and lawn are too dark.

After

The building and lawn portions of the image are

brightened without affecting the sky portion.

Procedures

STEP 1:

STEP 1 Open an image ..............................................................................................................2

STEP 2:

STEP 2 First, brighten the entire image......................................................................................3

STEP 3:

STEP 3 Select the Plus Brush ....................................................................................................4

STEP 4:

STEP 5 Enhancement is completed ...........................................................................................6

STEP 5:

Brightening portions of an image using the Minus Brush ...........................................................7

STEP 6:

REFERENCE: Verifying enhancement range.............................................................................8

STEP 1: Open an image

This portion covers brightening of specific portions of an image using the Plus Brush.

First, open an image and consider how the image should be enhanced.

The sky portion of this image exhibits optimum brightness, so it doesn’t need to be

enhanced.

The building and lawn portions, however, need to be brightened.

STEP 2: First, brighten the entire image

Select LCH… from the Color submenu in the Adjust menu.

Raise the Master Lightness curve in the LCH… dialog to increase brightness to the

optimum level for the building and lawn portions of the image. Brightness of the sky

portion will also be increased, but we will focus only on the building and lawn portions

here.

The entire image is brightened.

Once adjustment is complete, click OK .

STEP 3: Select the Plus Brush

Select the Plus Brush.

The enhancement applied in step 2 is temporarily removed.

STEP 4: Use the Plus Brush to brighten portions of the image

Drag the mouse over the building and lawn portions that require brightening. The image

below shows the effect when the mouse is dragged over a portion of the building and lawn.

When the Plus Brush or Minus Brush is selected, right-clicking the mouse over the image (or clicking

while holding down the CTRL key in Windows/CONTROL key on a Macintosh) displays the Selection

Brush Options dialog. The size of the brush can be modified using the Size setting.

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