quickly break the image down into multiple layers using different decomposition modes produces a nice array overview	先使用不同方法,單抽出某種元素, 生成多種黑白照
Keep in mind that the goal in this example is to maintain good tonal density as well as imparting a sense of texture and detail.	九個不同的B&W你要把掌握好色調及紋理和細節
the texture and detail of the scarf.	由面紗開始，我們可以選 Luma Y709F, Luma Y470F, and HSL - Lightness
an eye towards skin tones and her face	轉移注意力到臉及皮膚的色調時 RGB-Red, HSV-Value 都不錯 #註：它要臉部光線多些
Place the RGB - Red channel over the Luma - y709f	重合二張 B&W 相片可借由 mask, 但在不同 layer 要複製貼上時要先 anchor 一個 floaing layer