Settings related to navigation and Viewport control mappings are managed in the Application and Controls tabs in Preferences.  To open these tabs, click on File > Preferences > Controls tab.


Controls


Figure 1: Controls tab


Controls Tab Parameters

Multiplier Key - When this key is used in combination with the following shortcuts, Viewport navigation speed is multiplied by the specified amount.

Camera Orbit - Rotates the camera around the target position.

Camera Move - Moves the camera parallel to the image plane.

Camera Dolly - Moves/zooms the camera forwards or backwards along the camera direction.

Camera Rotate - Rotates the camera around the up vector and right vector.

Camera Roll - Rotates the camera around the camera direction.

Image Zoom - Zooms into the Viewport image without moving the camera.

Image Pan - Pans the Viewport image without moving the camera.

3D Mouse Speed - The speed of Viewport navigation while using a 3D mouse.

Invert 3D Mouse Controls - Inverts the direction of controls while using a 3D mouse.

Scroll Wheel Action - The scroll wheel can be set to zoom or scroll when used in the Nodegraph Editor pane.

Mini Instance Count - Limits the number of gizmos displayed on instances, when a Scatter node is moved using a gizmo.