focal length

音標發(fā)音

The focal length you need depends on your distance from the burst and what you’re trying to capture.
你所需要的焦距取決于你和被拍攝焰火間的距離，以及你想捕捉到怎樣的畫面。
You also lose the focal length 'boost' offered by smaller sensor cameras when shooting with telephotos.
同時在攝遠時長焦鏡頭給更小畫幅相機帶來的沖擊力也會隨之消失。
What excites ophthalmologists most, and what every lens-making company wants to achieve, is an “accommodating” lens that can change its focal length in the same way that a natural lens does.
最讓眼科學家興奮的，而且每一家人工晶體制造公司都想獲得的，是一種“善于適應新環(huán)境的”晶體，能像天然的晶體一樣改變它的焦距。

The high-end Schneider lens offers a 24mm, ultra-wide focal length and 3x optical zoom.
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Using a lens with too long a focal length, for instance, makes the image appear flat.
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This camera differs from the DP2 Merrill, which was released in June, due to its wider focal length.
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the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens

焦距
A new method of measuring telephoto lens focal length is presented in this paper.
提出一種新的測量長焦透鏡焦距的方法。
焦長度
焦長

焦距
Using Gradual Aberration optimization Method, a 6m focal length, 600mm aperture off-axis aspherical optical system is successfully aligned.
采用像差逐項優(yōu)化法,成功地裝調(diào)了焦距為6m 口徑600 mm 的離軸三反鏡光學系統(tǒng)。
焦點距離
焦