Motion Blur Layer¶
About Motion Blur Layer¶
Blur is a graphical effect that aims to imitate an unfocused image. In a photography context blur can occur when the focal point of the lens is not at the right position of the target of the photograph. Also blur can have other origins. Blurs can happen as the result of a poor exposure during its recording (too long exposure time for a large movement of the object or a high movement of the recorder). Also blurring occurs when you use a very wide aperture (f4). In that case the objects that are out of focus are very blurred compared to the situation where the aperture is fully closed (f22).
In a graphical context, blurs are effects that imitate those situations (with more or less success). Motion Blur Layer allows to simulate the blur of picture, that arises by movement.
Parameters of the Motion Blur Layer¶
The parameters of the Motion Blur Layer
are:
Name |
Value |
Type |
0f |
time |
|
1.000000 |
real |
|
Hyperbolic |
integer |
|
0.000000 |
real |
|
1.000000 |
real |
Aperture¶
The Aperture
parameter indicates the number of frames used to
compute the effect of motion. The concept is analogous to the shutter
speed or exposure time in photography.
Subsamples Factor¶
The Subsamples Factor
affects the number of Subsamples to be
computed. Using a high value, the smudge is finer, but the rendering
takes longer as it involves much more computations.
Subsampling Type¶
The Subsampling Type
parameter indicates the type of Subsampling
used between:
Constant
Linear
Hyperbolic
Subsample Start Amount¶
The Subsample Start Amount
parameter indicates the value of
Subsample at the start. For example, if Subsample Start Amount
is
set to 0, it won’t have any blur on start. Otherwise the motion of
objects from lower layers begin as a smudge.
Subsample End Amount¶
The Subsample End Amount
parameter indicates the value of Subsample
at the end. For example, if Subsample End Amount
is set to 0, the
last state of the objects from lower layers will appear without any
blur.
Samples¶
From Subsample Start 0 to Subsample End 1 |
From Subsample Start 1 to Subsample End 0 |
|
---|---|---|
0f–0f |
||
0f–24f |
||
24f–24f |
||
24f–0f |
Notes:
Rows in table –
Aperture
value from beginning (frame 0) to end (frame 120).Columns in table –
Subsample Start Amount
value andSubsample End Amount
value
See also¶
A short description of the blur layers can be found here: Layer
Radial Blur Layer with a radial control of the size of the blur.
Blur Layer mostly used types of blur.