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Let's talk about parenting for a minute because it's a very useful feature in Blender when you are moving things around. We are going to start out with Captain- complete and now Shift-click on Layer 1 and on Layer 10 and we'll go ahead and take Captain Knowledge out of the picture here by Shift-clicking on Layer 3 and look at just the lights in the scene. This spotlight here is called the key light and it provides the primary light that's used for the camera. So just like in a real camera you have a flash on your camera and so as you move the camera around, you want the flash to move with it.
So the way you do that is you want to parent this light to the camera. You can't join them together like we did with meshes because they are not meshes. One is a light, the other is a camera. You can't join them together. But you can parent them together, and to parent you Shift-click on all of the children that you want to be parented to the camera, in this case just the spotlight or the key light and then Shift-click on the object that you want to be the parent, in this case the camera. Now you want to press Ctrl+P to make that camera the parent of the child and now as the parent moves around, the children move with it.
Just like if you had little 2-year- old kids, if you moved they would have to move with you. Now the child can still run around the house like a little wild wind chime like that, but notice there's a stretched line between the child and the parent and it's just showing you that this light is parented to the camera, and so if even though I change the relative distance or angle between the two, still when I move the parent by pressing G here, the light moves with it. If I rotate the camera, let's go on the top view here.
Notice that the light rotates with it. So they always stay in the same relative orientation to the parent and I don't have to adjust both of them, all I have to do is adjust the parent. So use parenting when you want to make the properties of one object or many objects subservient to the properties of the parent object.
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