Ulead PHOTOIMPACT 11, Руководство пользователя

Страница: 85 / 323

CHAPTER 2: PHOTO EDITING 85
Lens Filters
In traditional and digital photography, filters are placed over the camera lens for
the purpose of modifying the appearance of a photo. Different filters are used to
achieve different effects such as eliminating reflections on shiny surfaces, saturate
colors, or deepen blue skies. The same output can be achieved in digital imaging
using PhotoImpact's
Lens Filters .
Diffraction Filter
The Diffraction Filter creates rainbow-like reflections in highlights and point light
sources. This effect adds a colorful and dramatic accent to images.
To create Diffraction Filter effects:
1. To apply diffraction to a specific area on
the image, use the Selection Tool to
select an area.
2. Select Photo: Lens Filters - Diffraction
Filter .
3. In the Dual View tab, the before and
after views show the applied effects in
real time. Use the zoom buttons to adjust
the viewing size of your image and see
the effects more clearly.
4. From the Filter type list, select the type
of formation for the diffraction effect. If
Starburst or Circular is the selected
filter type, specify the pairs of Streaks .
5. Luminosity threshold determines the
amount of highlights (or light areas) in
the image to which the effect will be
applied. Select a higher value to include a
lesser coverage of highlights detail thus
creating lesser diffractions. Otherwise,
select a lower value to include more
coverage of highlights details and create
more diffractions.
6. If there are too many diffractions
generated which do not look quite realistic
on your image, adjust
Convergence .
Increasing the value merges multiple
clusters into one cluster and recalculates
the center of the new cluster.
After
Before