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Optical Zoom

Zoom is the ability of the lens to bring distant objects closer. It is possible to change and adjust the focal length of the lens. The closer your subject is (shooting at a longer focal length), the more it reduces the aperture and the more likely it is for the final image to be affected by camera shake.

Unlike digital zoom, optical zoom does not reduce image quality. 

Typical optical zoom ratios:

  • 3x for compact cameras
  • 10x for ultrazoom cameras
  • Depends on the lens type for digital SLRs 

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