depth of field

基本解释

If you can get that level of depth of field for that cheap in order to single out your subjects in your photos, why not go for it?
如果你發現能花這麽少的錢來取得這麽淺的景深——足以把你的對象在相片中突出，爲什麽不馬上配備一個呢。
The simplest way to do this is to choose a small Aperture setting (a large number) as the smaller your aperture the greater the depth of field in your shots.
最簡單的辦法是選用最小的光圈設定（鏡頭上顯示的最大的數字），光圈越小，你所獲得照片的景深就會越大。
Photographers often push this effect further by using a very shallow depth of field while shooting, which blurs out everything unimportant and highlights the subject extremely well.
給這些小家夥拍照時，攝影師通常會選擇很淺的景深，這樣周圍不重要的事物會很模糊，但主躰會被突出得恰到好処。

Arty photo effects that use selective focus and short depth of field are actually closer to the truth of the eye.
FORBES: The Reason Why Many Found The Hobbit At 48 FPS An Unexpectedly Painful Journey
They offer the chance to use a much shallower depth of field.
ECONOMIST: Tech.view: Me no Leica any more The

the range of distance in front of and behind an object focused by an optical instrument, such as a camera or microscope, within which other objects will also appear clear and sharply defined in the resulting image &rarrcompare depth of focus

景深
The second one is the fast enhancement algorithm with depth of field compensation in objects.
第二,考慮景深距離補償的快速圖像增強算法。
電子、通信與自動控制技術
景深