 BetterPhoto Member |
The X Factor ... in Optical Zoom What does X mean in optical zoom?
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Jon Close |
X means "times" or "multiple." A 10x zoom is one in which the longest focal length is 10 times the length of the shortest, such as 7mm - 70mm. It is not the same usage as binoculars, where "8x" means the image appears 8 times closer, or larger, compared to unaided vision.
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