Lower values enclose more of the object's pixels.

4 Open the Object marquee color picker, and click a color.

When you change the threshold value of the object marquee, the area enclosed by the marquee changes, but the object itself does not change. Pixels that are not completely opaque can lie outside the marquee even though they are still part of the object.

Adding drop shadows to objects

There are three types of drop shadows: glow, flat, and perspective. Glow drop shadows silhouette objects and are centered horizontally and vertically; they simulate a light source shining straight onto an object. Flat drop shadows simulate the effect of directional light, so shadows are offset. Perspective drop shadows create threedimensional depth. You can add a drop shadow to any object, including text.

The object on the left has a flat drop shadow, while the object on the right has a perspective drop shadow.

You can create and adjust drop shadows interactively in the image window. You can also change the color, position, direction, and transparency of a drop shadow directly in the image window.

You can also apply preset drop shadows. When you apply a preset, you can modify it to create a custom drop shadow. For example, you can change its direction and distance from an object, its color, and its opacity. By default, the edges of drop shadows feature squared feathering. You can choose another feathering type, such as a Gaussian blur

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which creates a realistic-looking drop shadow. You can also copy a custom drop shadow or save it as a preset.

When you change the shape or transparency of an object that has a drop shadow, the drop shadow automatically also changes.

To add an interactive drop shadow

1Open the Interactive/Transparency flyout , and click the Interactive dropshadow tool .

2Select an object.

If you want to create a flat drop shadow, drag from the center of the object

If you want to create a perspective drop shadow, drag from the edge of an object.

You can also

Change the color of the drop shadow	Drag a color swatch from the color palette to
	the end node on the drop shadow arrow.
Move the drop shadow	Drag the start node on the drop shadow
	arrow.
Change the direction of the drop shadow	Drag the drop shadow arrow head.
Adjust the drop shadow’s opacity	Drag the triangular Transparency handle
	on the drop shadow arrow.
Adjust the edge feathering	Drag the triangular Feather handle on the
	drop shadow arrow. By default, squared
	feathering is used, but you can choose
	another type from the Shadow feather
	edge picker on the extended property bar
	. For example, the Gaussian blur creates a
	realistic drop shadow.

To add a preset or custom drop shadow

1Open the Interactive/Transparency flyout , and click the Interactive dropshadow tool .

2Select an object.

3Choose a preset from the Preset list box on the property bar.

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4Open the Shadow color picker on the property bar, and click a color.

5On the extended property bar , type values in any of the following boxes:

• Shadow direction — lets you specify the angle of the shadow in relation to the

object

•Shadow offset — lets you specify the distance of the shadow from the object’s point of origin

•Shadow fade — lets you specify the percentage by which a perspective drop

shadow fades as it moves away from the object

•Shadow stretch — lets you specify the length of a perspective shadow

•Shadow transparency — lets you specify the transparency of the shadow

•Shadow feather — lets you specify the number of pixels on the edge of the

shadow that are feathered to create a soft edge. By default, squared feathering is used, but you can choose another type from the Shadow feather edge picker on the extended property bar. For example, if you want to create a realistic drop shadow, choose the Gaussian blur. You can also specify a direction for the feathered pixels from the Shadow feather direction picker .

To copy a drop shadow

1Select the object to which you want to apply a drop shadow.

2Open the Interactive/Transparency flyout , and click the Interactive dropshadow tool .

3Click the Copy shadow properties button on the extended property bar .

4Click the object that has the drop shadow properties you want to copy.

From here

For more information about	In the Help index, see...
Removing black or white edges from an	objects, changing edges
object
Changing the object marquee	object marquee, customizing
Using clip masks to change object	transparency, using clip masks
transparency

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