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要说明一个透镜的全部性能,就需要应用大量的数据。为了使人们了解一个透镜能否应用于某一个特定场合,就必须具备一些基本的光学知识。本文主要介绍变焦距透镜的光学基础。
To account for the full performance of a lens, a large amount of data needs to be applied. In order to make people understand whether a lens can be applied to a particular occasion, it must have some basic optical knowledge. This article focuses on the optical basis of the zoom lens.