By default, your scene has only one renderable camera (the original perspective camera) that renders all objects in your scene. You can change this to render only selected objects in your scene.
If you add another camera to your scene and want to make it renderable (or you would like to make one of the default orthographic cameras renderable), you must set this camera to renderable (see Make an existing camera renderable).
To render only selected objects in your scene
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