---
title: "Vector Motion Blur"
url: "https://help.maxon.net/c4d/en-us/Content/html/MOTIONBLUR-MBLUR_GLOBALS_GROUP.html"
section_path: "Advanced Render > Vector Motion Blur > Vector Motion Blur"
element_id: "MOTIONBLUR"
group_id: "MBLUR_GLOBALS_GROUP"
description: "The Phase value defines the position of the blur. The following Phase values should serve as a reference:"
---

## Vector Motion Blur

### Phase

Parameter ID: `MBLUR_PHASE` · Range: [-100..100%]

![Image: 004154.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004154.jpg)\
From left to right: Phase values of 100%, 0% and -100%.

The Phase value defines the position of the blur. The following Phase values should serve as a reference:

- -100%: behind the object.
- 0%: the same length on both sides of the object.
- 100%: in front of the object (the blur moves ahead).

### Density

Parameter ID: `MBLUR_DENSITY` · Range: [0..10000%]

![Image: 004155.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004155.jpg)\
Density set to a low value (left) and high value (right).

The Density value defines the coverage of the blur in the image.

### Samples

Parameter ID: `MBLUR_SAMPLES` · Range: [2..1000]

![Image: 004156.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004156.jpg)\
Samples set to a low value (left) and high value (right).

Samples allow you to set the resolution or smoothness of the blur. Low values result in a grainy look, while more samples increase both the quality and the render time.

### Sample Radius

Parameter ID: `MBLUR_BLUR` · Range: [0.00..10.00]

![Image: 004157.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004157.jpg)\
Sample Radius set to a low value (left) and high value (right).

The higher the Sample Radius, the less crisp the blur will look.

### Weighted Trails

Parameter ID: `MBLUR_TRAILS`

![Image: 004158.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004158.jpg)\
Weighted Trails disabled (top) and enabled (bottom).

The Weighted Trails option uses a different algorithm that allows the trails to fade out towards the end, resulting in a realistic trail.

### Geometry Deformation

Parameter ID: `MBLUR_MESHTRACK`

Enable this option to also blur Deformer objects such as FFDs.

> **Tip:** Tip:You can achieve very good motion blur results if you combine VMB and Sub-Frame Motion Blur (**SFMB**). Select small factors for SFMB (**5 Times**) and set the **Shutter Angle** to 360° or more. VMB will always affect the SFMB.