Scene Properties


Used to select which camera is used as the active camera. You can also set the active camera in the 3D View with Ctrl-0.

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.

Sets can themselves have a background set (they’re recursively included). So you can always make additions to existing scenes by using them as a background to a newly created scene where your additions are made.


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

Active Clip
Active movie clip for constraints and viewport drawing.


Length Presets
Common unit scales to use.
Uses Blender Units.
Metric, Imperial
Standard unit of measurement for lengths.

Standard unit for angular measurement.

Degrees, Radians


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.


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 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

Keying Sets

See Keying Sets.

Color Management

Options to control how images appear on the screen.

For Color Management settings for more information.


Options to control global audio settings.

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


Mix Rate


Options to control global gravity used for physic effects.

See the Physics chapter for more information.

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.

See Rigid Body World for more information.


Maximum number of Viewport/Render subdivisions to use for the Subdivision Modifier.
Child Particles
Percentage of Child Particles to see in the Viewport/Render.

See also

There are also render engine specific Simplify settings for both Blender Render and Cycles.