Well you have to consider

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Avatarbrandon0409
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Well you have to consider that it is the same principle as using a telescope to look at another planet or a star.

If you’ve ever done this, then you know how difficult it is to center the object in the lens.

It all has to do with angles. If you put your camera on a tri-pod and point it straight ahead toward an object 200yds away without zooming in, then move the camera 10 degrees to the left (or right), it doesn’t move much, but it does move. Right?

Now zoom in on that object and move your camera exactly 10 degrees again. You’ll notice it moves way out of sight of your view finder.

Now for the fun part; the experiment that will make this all make sense:

1. Put a protractor on the ground.
2. Line the bottom up with your camera lens.
3. Put a stick in the ground and tie a line of string to it. I would use a long wound ball of twine (it’s cheap).
4. Now pull that string to the object.
5. Once you get there, move your camera to the left (or right) 10 degrees (You’ll probably need a 2nd person).
6. You will now notice how far 10 degrees actually is once you get to a distance of 200yds.
7. The second spot is where your camera would be looking when it is turned.

Depending on the distance from the camera, you could move 20 yard or more to the left or right. Now if you don’t zoom in, you may be able to fit that into the viewfinder, but when you are zoomed it, it is dificult to keep things in view… just like with a telescope.

Now imagine that same thing while trying to look at Saturn through your telescope. You move 10 degrees in either direction and we are talking millions of miles.

If you were into astronomy, there is a formula you can use to actually figure out exactly how far the camera is from you. This is how scientists measure the distance of object in space from earth.

Hope this info helped you at least kind of understand the concept.

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