ChromaticAberration — usually associated with objective lenses of refractor telescopes, is the failure of a lens to bring light of different wavelengths (colors) to a common focus.
色差-经常在折射望远镜的物镜上出现，是因为透镜不能把不同波长(颜色)的光聚焦到一点而形成的。
2
Another problematic contrast effect is chromaticaberration [5].
另外一种对比度产生的问题是色差(chromatic aberration)【5】。
3
This phenomenon is called a chromaticaberration; another example of this effect is seeing a rainbow when you shine white light through a prism.