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:
|Subsample Start Amount||0.000000||real|
|Subsample End Amount||1.000000||real|
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.
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.
The "Subsampling Type" parameter indicates the type of Subsampling used between:
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.
|From Subsample Start 0 to Subsample End 1||From Subsample Start 1 to Subsample End 0|
- Rows in table – "Aperture" value from beginning (frame 0) to end (frame 120).
- Columns in table – "Subsample Start Amount" value and "Subsample End Amount" value