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Photoshop
Using Smart
Filters in CS 5
Photoshop 101 Instructor
This feature allows you to apply filters in a
non destructive way, meaning you are not
destroying or damaging any of the pixels in
your image. Normally, when you choose a
filter, it is applied to the chosen layer in the
layers panel and permanently alters those
pixels. However, when you use a smart filter,
a full copy of that layer is embedded into the
Photoshop file so that you never damage or
lose pixels
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