sketch-20

since: 2020/03/19 
update: 2020/04/29

reference:
1. 筑是藝術專業畫室
2. 素描初繪：零基礎也可以輕鬆學素描
3. sketch-01
4. sketch-02
5. sketch-03
6. sketch-04
7. sketch-05
8. sketch-06
9. sketch-07
10. sketch-08 
11. sketch-09
12. sketch-10
13. sketch-11
14. sketch-12
15. sketch-13
16. sketch-14
17. sketch-15
18. sketch-16
19. sketch-17
20. sketch-18
21. sketch-19
22.

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條紋布

A. 範例

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B. 示範與練習
     1. 打稿(HB): 
         a. 先畫出布後方立方體的透視圖.
         b. 再畫出素面布的轉折特徵.

     2. 平塗一層.

         布表面的體感處理:
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     3. 將亮暗交界線與布上的陰影所圍成的區域, 塗成同一暗色調(2B).

     4. 先推深色調(3B): 從亮暗交界線往暗部遞減色調, 接著產生暗部陰影,
         然後再漸層將色調轉淡.

     5. 再用硬筆推亮部(H): 從亮暗交界線往亮部逐漸將色調轉淡, 可保留部分全白.
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     6. 留住畫上去的調子.

     7. 條紋處理: 5B

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C. 備註
     1.