Clear up the confusion around camera zooms for a friend or family member.
Explaining the basics of how a camera's zoom works to a friend, family member or co-worker can be difficult. Some camera components magnify the picture but technically they aren't considered a zoom. But by starting with the basics, you can clarify sometimes confusing and related features.
Instructions
1. Start with the two basic types of zooms--optical and digital. Explain how each lens works and clarify the difference between them. Optical zoom magnifies photos, and digital zoom crops photos before expanding the pixels that make up the image.
2. Describe the advantages of optical zoom and why it is superior to the cropping and scaling employed by digital zoom. Explain how the scaling and interpolating of a digital zoom decreases the image quality.
3. Clarify the difference between telephoto and zoom lenses. When explaining the difference between the telephoto and zoom lenses, keep in mind the essential differences between the two lenses--telephoto lenses have a fixed focal point while zoom lenses have variable focal points.
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