---
title: "Distance Attenuation"
url: "https://help.maxon.net/c4d/en-us/Content/html/GLOW-GW_ATT_GROUP.html"
section_path: "Advanced Render > Glow > Distance Attenuation"
element_id: "GLOW"
group_id: "GW_ATT_GROUP"
description: "Using these parameters, the glow effect takes the Z-buffer into account (i.e. the distance from the camera to each surface) or the glow is adjusted …"
---

## Distance Attenuation

Using these parameters, the glow effect takes the Z-buffer into account (i.e. the distance from the camera to each surface) or the glow is adjusted radially around an object.

### Use

Parameter ID: `GW_AT_USE`

### Start Range

Parameter ID: `GW_AT_START` · Range: [0..+∞m]

### End Range

Parameter ID: `GW_AT_END` · Range: [0..+∞m]

![Image: 004133.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004133.jpg)

The Start Range and End Range define a range over which the glow changes with distance.

### Distance Position

Parameter ID: `GW_AT_POS`

There are two settings.

Z-Buffer

Start Range and End Range refer to the Z-buffer, i.e., the distance from the camera to the object's surface.

3D Pos.

Start Range and End Range refer to the position of the object's axis in 3D space. The glow spreads out radially from the axis.

### Use

Parameter ID: `GW_AT_SIZEON`

### Size

Parameter ID: `GW_AT_GSIZE`

### Use

Parameter ID: `GW_AT_DENSON`

### Density

Parameter ID: `GW_AT_GDENS`

### Use

Parameter ID: `GW_AT_LUMON`

### Luminosity

Parameter ID: `GW_AT_GLUM`

### Use

Parameter ID: `GW_AT_GCOL`

### Color

Parameter ID: `GW_AT_GRAD`

You can use gradients to refine the following glow properties from the Glow page: Size, Intensity, Luminosity and Color (see **Glow** entry).

![Image: 004134.jpg](https://help.maxon.net/c4d/en-us/Content/Resources/Images/004134.jpg)

Think of these gradients as running from the Start Range value to the End Range value. In the gradient, black represents a value of 0, white represents the value defined on the Glow page.