# Scene Properties¶

## Scene¶

Camera
Used to select which camera is used as the active camera.
Background

Allows you to use a scene as a background, this is typically useful when you want to focus on animating the foreground for example, without background elements getting in the way.

This scene can have its own animation, physics-simulations etc, but you will have to select it from the Scene data-block menu, if you want to edit any of its contents.

Tip

This can also be used in combination with Linking to a Scene, where one blend-file contains the environment, which can be re-used in many places.

Active Clip
Active movie clip for constraints and viewport drawing.

## Units¶

Length Presets
Common unit scales to use.
Length
None
Uses Blender Units.
Metric, Imperial
Standard unit of measurement for lengths.
Angle

Standard unit for angular measurement.

Tip

When you are using Degrees, the radian value is also displayed in the tooltip.

Unit Scale

Scale factor to use when converting between Blender Units and Metric/Imperial.

Tip

Usually you will want to use the Length presets to change to scale factor, as this does not require looking up values to use for conversion.

Separate Units
When Metric or Imperial display units as multiple multiple values, for example, “2.285m” will become “2m 28.5cm”.
Imperial Units
Full Name Short Name(s) Scale of a Meter
thou mil 0.0000254
inch ", in 0.0254
foot, feet ', ft 0.3048
yard yd 0.9144
chain ch 20.1168
furlong fur 201.168
mile mi, m 1609.344
Metric Units
Full Name Short Name(s) Scale of a Meter
micrometer um 0.000001
millimeter mm 0.001
centimeter cm 0.01
decimeter dm 0.1
meter m 1.0
dekameter dam 10.0
hectometer hm 100.0
kilometer km 1000.0

See Keying Sets.

## Color Management¶

Options to control how images appear on the screen.

## Audio¶

Options to control global audio settings.

Volume
Volume for the scene.
Update Animation Cache
Updates the audio animation cache. This is useful if you start noticing artifact in the audio.

### Distance Model¶

Distance Model
TODO.
Speed
Speed of the sound for the Doppler effect calculations.
Doppler
Pitch factor for Doppler effect calculation.

Channels
TODO.
Mix Rate
TODO.

## Gravity¶

Options to control global gravity used for physic effects.

## Rigid Body World¶

The Rigid Body World is a group of Rigid Body objects, which holds settings that apply to all rigid bodies in this simulation.