12/23/2023 0 Comments Blender motion blur![]() The Shutter setting is two values, a and b which are fractions of the shutter interval which let you adjust how long it takes the shutter to open and close. Let's look at the example, with frame center blur, a bunch of motion samples, and shutter angles of 90, 180, and 360.īy default the shutter effectively opens and closes instantly. The higher the shutter angle, the more blurry moving objects will look. The default is 180 degrees, so the shutter will be open for half of the frame. The shutter angle is an angle (out of 360 degrees) that determines what fraction of a revolution the camera's shutter is open, for exposing the "film". In addition to motion paths, spinning objects often require extra motions samples. There's no limit to the number of samples. By the time we reach 7 samples, it looks pretty smooth! You can keep going has high as you like. This is sometimes referred to as Multi-Segment motion blur.įor example, here's how the image changes as we increase from 2 samples to 7. More than two samples are evenly distributed between shutter open and close. Two samples means that the position of the ball is sampled only at the shutter open time and shutter close. Under the RenderMan Geometry panel you'll see a checkbox to Override Motion Samples, and a Motion Samples property.Īny setting less than 2 will effectively turn off motion blur for that particular object. You can change the global number of motion samples in Motion Blur panel of the render properties. Or if you know that only a particular piece of geometry requires extra samples, you can add them in the object properties for the sphere. By default, there are only two motion samples, because they are expensive, and two is often sufficient. The blur is horizontal, when the ball really should reach an apex in the middle of that streak. Our red ball looks kind of odd in the second frame with centered blur. Again, the first frame has no blur because there is no animation before that frame. The following images show End of Frame blur, which means the shutter closes on the frame. The blur for the first and last frames looks shortened, because the animation does not extend beyond those frames. The following images show Center on Frame blur, which means the shutter opens before the frame, and closes after, centered on the frame. This is because there is no animation after the time that the shutter opens for that frame. The default shutter angle of 180 means the shutter is open for half of a frame. The shutter opens at the start of the frame. The following images show Start on Frame blur for frames 1, 2, and 3. Motion blur can be enabled in the render properties, under the Motion Blur panel. In this example key-frames are made with linear tangents, so that as we observe shutter timing, the balls will maintain a fixed speed. ![]() ![]() The following images show the positions of two balls at frames 1, 2, and 3. ![]() Let's look at a simple scene which demonstrates the effects of motion blur settings. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |