網站設計的原理_網頁設計教程
推薦：何時用按鈕，何時用鏈接同事MM問了我這個問題，感覺忽然問了我一個簡單的用腳趾頭都能答出來的問題，因為這兩個東西太常見，太普通了。但，我竟然不知道該如何回答。想了一下，給了一
Tone and Texture
色調與結構
This specifically applies to drawings more than photography, but tone and texture are very important. Tone refers to shading of light and dark on an object and texture is the visual and tactile surface characteristics of an object.
色調與結構確實很重要，圖片比照片更能運用此項內容。色調涉及到陰影以及物體顏色光亮程度；結構涉及到物體的外觀特征。
Here's a list of things that affect the tone and texture of an objects appearance.
下面介紹影響網站色調與結構的幾個因素。
1. The direction from which the light is coming. (Left, right, above, behind, or below.)
1. 光的方向。（左、右、上、下、后）
2. The intensity of the light. (Candlelight or sunlight.)
2. 光的亮度。（燭光或者陽光）
3. The type of light (Light from the setting sun or flash.)
3. 光的類型。（落日還是烈日）
4. Objects standing between the light source and your subject or object. (Light passing through a thin fabric.)
4. 站立在光源之間的物體。（光穿過物體）
5. The color and texture of the object. (A fuzzy blanket looks a lot different than a piece of granite.)
5. 物體的顏色與結構。（絨毛毯子與花崗巖不同）
Light and Shade
光線與陰影
Light always travels in a straight line and depending on the location of the light the object or subject can look dramatically different. To understand this principle get a roll of film a light source, a lamp, an object or a family member. Take a series of photos of your subject start with the light source at twelve o'clock take each successive photo moving the light source to each position on the clock. When you look at your photos you will be amazed at how different your subject looks in each image. This exercise is great for anyone wanting to understand how light changes the look of a subject.
光沿直線傳播，光的位置不同，網站中的物體或者要表達主題就會顯著不同。了解到這個內容之后，在現在的光源下，拍攝照片（物體、家人都可以），然后在中午12點鐘的時候，再次拍攝同一張圖片。觀察圖片時，你會驚異地發現圖片差異很大。你可以根據這個情況，清楚理解光源對照片的影響。
Shade
對比程度
Shade or shadow and more commonly known as contrast is the degree of difference between the light and dark areas. An image with very black blacks and very light whites has high contrast. An image that is mostly shades of gray has low contrast. Contrast is determined by the intensity of the light source. Adjusting the contrast can help you create a very realistic image or a fantastic one.
我們經常看到的光與陰暗區域的對比程度，就是對比陰影了。黑色、白色圖片的對比很明顯，而灰色梯度的對比就比較弱。光源強度決定對比程度，而對比程度會決定圖片的現實性或者科幻性。
If you have some specific questions please visit my Photography and Design Forum at: Kellypaalphotography.com Bulletin and post your question there.
假如還有其它問題，登錄Kellypaalphotography.com Bulletin的“圖片與設計”論壇，你可以在那里提出相關問題。
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