Motion Blur Basics

Motion Blur Basics

Maya 8.0 Tutorial

 

How to Add Blur to Moving Objects in Maya

 

 

Objects in motion appear blurred when captured by a camera. The length of the exposure and velocity of the object determine the amount of blur.

For instance, if you were to take a picture of a rotating airplane prop, it would be blurred, even with a fast shutter speed.

 

Step One

Add a cylinder primitive to the workspace (Create > Primitive > Cylinder) and lengthen the cylinder with the Scale tool.

Step Two

In the front view, select the cylinder. Set the timeline to frame one and press the s key to set a keyframe.

Step Three

Move the timeline to frame 24. With the cylinder still selected, open the Channel Box and change the z rotation to 720.

Press the Enter + Esc and then press s to set a keyframe. For a 24 fps animation, the cylinder rotates two revolutions per second.

Step Four

In the render options, check the Motion Blur option to activate (under the Maya Software tab > Motion Blur). Click the 3D button.

Step Five

Render the sequence. For more information on rendering a movie, see topic, Rendering a Movie.

Blur and Shutter Angle

Blur is determined by the object speed and the shutter angle (see the camera options, Special Effects section of the Attribute Editor).

Larger shutter angles produce more blur. The default is 144. The shutter angle is also related to the animation fps (frames per second). An angle of 360 would blur for 1/24th of a second in an animation running at 24 fps.

For an angle of 90 the blur duration would be 90/360 x 1/24 = 1/96th of a second.

 

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