---
title: "Basic Properties"
url: "https://help.maxon.net/c4d/en-us/Content/html/DISTANCEBLUR-ID_VIDEOPOSTPROPERTIES.html"
section_path: "Advanced Render > Depth of Field > Basic Properties"
element_id: "DISTANCEBLUR"
group_id: "ID_VIDEOPOSTPROPERTIES"
description: "This parameter defines the general strength of blurring. Other parameters modify this strength such as Distance Blur and Radial Blur. Note that if you set …"
---

## Basic Properties

> **Tip:** All parameters with a circle next to their name can be animated. For details on how to animate parameters, click [here](https://help.maxon.net/c4d/en-us/Content/html/5714.html.md).

### Blur Strength

Parameter ID: `DB_FBLUR` · Range: [0..100%]

This parameter defines the general strength of blurring. Other parameters modify this strength such as Distance Blur and Radial Blur. Note that if you set Blur Strength to 0% there will be no blurring at all, even when the other blur parameters are set to high values.

### Use

Parameter ID: `DB_DBLURON`

### Distance Blur

Parameter ID: `DB_DBLUR` · Range: [0..100%]

The **Distance Blur** value refines the strength of blurring. For example, if you set **Blur Strength** to 80% and Distance Blur to 50%, the strength of full blurring will be 40% (50% of 80%).

> **Tip:** This setting will only work if the **Use Gradient** setting has been activated.

To use **Distance Blur**, ensure that the scene has a camera (Create | Cameras | Camera). Ensure also that the camera has been linked to the Viewport that you want to render (Viewport: Cameras | Scene Cameras). In the **Object Manager**, select the camera. In the **Attribute Manager**, click the Details tab to access the following settings.

![Image: 004098.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004098.jpg)

Of particular importance are:

- Focus Distance (**Object** tab): the distance from the camera to the focal plane, i.e., the distance from the camera at which the picture is perfectly sharp.
- Focus Object: instead of setting a **Target Distance**, you can choose an object to be the focal point, i.e., the object you select will be perfectly sharp.

![Image: 004099.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004099.jpg)

To blur behind the focus only, set the **Focus Distance** (or Focus Object) and enable **Rear Blur**. The **Use Gradients** option must be activated in the **Depth of Field** menu's **Basic** tab.

Alternatively, define a Focus object (assign a [Target Expression](https://help.maxon.net/c4d/en-us/Content/html/TTARGETEXPRESSION.html.md) to the camera).

![Image: 004100.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004100.jpg)\
Figure 1: Rear blur only.

![Image: 004101.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004101.jpg)\
Figure 2: Weak front and rear blur. / Figure 3: Strong front and rear blur.

### Use

Parameter ID: `DB_BBLURON`

### Background Blur

Parameter ID: `DB_BBLUR` · Range: [0..100%]

![Image: 004102.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004102.jpg)\
Figure 4: Background blur.

Use this parameter to control the strength of blurring for Cinema 4D's [Background object](https://help.maxon.net/c4d/en-us/Content/html/OBACKGROUND.html.md) (Objects | Scene | Background). All other types of objects are unaffected by Background Blur. See Figure 4.

### Use

Parameter ID: `DB_DOFON`

### Radial Blur

Parameter ID: `DB_DOF` · Range: [0..100%]

Radial blur is blur that gets stronger from the picture's center outwards. Use the input box to define the strength of the effect.

### Use

Parameter ID: `DB_AFOCUSON`

### Autofocus

Parameter ID: `DB_AFOCUS` · Range: [0..100%]

This option can be enabled to simulate the **Autofocus** feature of a real camera. The object in the center of the view will become the focal point, i.e., the object in the center will be perfectly sharp.

So that the object does not have to be exactly in the center, you can enter a tolerance value. The maximum value of 100% allows the object to be anywhere in the view. With lower values, the object must be closer to the view's center to trigger the auto-focus.

### Use Gradients

Parameter ID: `DB_RANGE_USE`

### Front Blur

Parameter ID: `DB_RANGE_FGRAD`

### Rear Blur

Parameter ID: `DB_RANGE_BGRAD`

> **Tip:** This option must be enabled in order to avoid visible edges at the transition of the blur ranges.

There are two states:

1. **Use Gradients** option disabled. Blur is created using an algorithm that takes the camera's focus (i.e. **Target Distance**) into account. **Front Blur** and **Rear Blur** are ignored.
2. **Use Gradients** option enabled. Front Blur and/or Rear Blur also enabled. Use the gradients to define the transition from sharpness to full blur.

In the gradients, black represents full sharpness, white represents full blur (i.e. the **Distance Blur** value) and gray is for intermediate blur strength (the brighter the gray, the stronger the blur).