Since Drop Shadow uses the alpha channel, it works well with 32-bit footage files from
drawing programs and three-dimensional rendering programs that support the alpha
channel.
Note: Because Drop Shadow works best when it is the last effect rendered, apply this
effect
after applying all other effects. You can create a more realistic-looking shadow on
animated clips by applying and animating the Motion or Basic 3D effect prior to applying
Drop Shadow instead of animating the Fixed Motion effect because Fixed effects are
rendered after Standard effects.
Echo
The Echo effect combines frames from many different times in a clip. It has a variety of
uses, from a simple visual echo to streaking and smearing effects. This effect is visible
only
when there is motion in the clip. By default, any previously applied effects are ignored
when you apply the Echo effect.
Echo
A.
Original image
B.
Image with low echo values
C.
Image with increased number of echoes
Echo Time
Specifies the time, in seconds, between echoes. Negative values create
echoes
from previous frames; positive values create echoes from upcoming frames.
Number of Echoes
Specifies the number of frames to combine for the Echo effect. For
example, if two echoes are specified, Echo will make a new image out of [current time],
[current time + Echo Time], and [current time + 2 * Echo Time].
Starting Intensity
Specifies the intensity, or brightness, of the starting frame in the echo
sequence. For example, if this is set to 1, the first frame is combined at its full intensity. If
this is set to 0.5, the first frame is combined at half intensity.
Decay
Specifies the ratio of intensities of subsequent echoes. For example, if the decay is
set to 0.5, the first echo will be half as bright as the Starting Intensity. The second echo will
then be half that, or 0.25 times the Starting Intensity.
A B C
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Adobe Premiere Pro Help Applying Effects
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Echo Operator
Specifies the operations to be performed between echoes.
Add
combines
the echoes by adding their pixel values. If the starting intensity is too high, this mode can
quickly overload and produce streaks of white. Set the Starting Intensity to 1.0 per number
of echoes and the Decay to 1.0 to blend the echoes equally.
Maximum
combines the
echoes by taking the maximum pixel value from all the echoes.
Minimum
combines the
echoes by taking the minimum pixel value from all the echoes.
Screen
emulates
combining the echoes by sandwiching them optically. This is similar to Add, but it will not
overload as quickly.
Composite in Back
uses the echoes’ alpha channels to composite
them
back to front.
Composite in Front
uses the echoes’ alpha channels to composite them front
to back.
To incorporate a clip’s motion into the Echo effect:
1
Set up your motion before applying the Echo effect.
2
Create a virtual clip of the clip with motion.
3
Drag the Echo effect to the virtual clip.
Note: Use a large Number of Echoes and a short Echo Time to get smooth streaking and
smooth trail effects.
4
Set controls as needed.
Emboss
