Editing Magnification (section)

==Examples of magnification==
Some [[optical instrument]]s provide visual aid by magnifying small or distant subjects.

* A [[magnifying glass]], which uses a [[Lens (optics)|positive (convex) lens]] to make things look bigger by allowing the user to hold them closer to their eye.
* A [[telescope]], which uses its large [[Objective (optics)|objective lens]] or [[primary mirror]] to create an image of a distant object and then allows the user to examine the image closely with a smaller [[eyepiece]] lens, thus making the object look larger.
* A [[microscope]], which makes a small object appear as a much larger image at a comfortable distance for viewing. A microscope is similar in layout to a telescope except that the object being viewed is close to the objective, which is usually much smaller than the eyepiece.
* A [[slide projector]], which projects a large image of a small slide on a screen. A photographic [[enlarger]] is similar.
* A [[zoom lens]], a system of camera lens elements for which the focal length and angle of view can be varied.