所有影响整体形象的修改，如色彩、饱和度、色阶、对比度，都应首当其冲，再进行细节性的编辑和修整。

All corrections that affect the whole image, such as color, saturation, level and contrast, should be made first, before starting to edit and retouch more in detail.

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对比度确定了显示器能看到的细节程度。对比度越高，色彩更丰富、线条更清晰。

Contrast ratio determines the level of detail that can be seen on the display, with the higher ratio providing richer color and crisper lineation.

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观察的条件(大气扰动)是影响对比度和行星细节的最重要的因素。

Seeing conditions (or air turbulence) is the single most important factor that degrades image contrast and planetary detail.

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