限制因素之一就是观察角度，这与使用照相机的情况类似：长焦镜头的视野比广角镜头的观察角度要窄得多。
One limiting factor is the viewing Angle, which is comparable to using a camera lens: a telephoto lens has a narrower view than a wide-angle lens.
这两款相机都可以拍摄超过1,200万像素的照片，尼康和三星都是广角镜头，变焦分别为5倍和4.6倍。
Each camera can capture photographs with over 12-megapixel resolutions, and the Nikon and Samsung have 5x and 4.6x wide-angle zoom lenses, respectively.
不管你信不信，这新的数位相机有广角镜头。
Believe it or not, this new digital camera has a wide Angle lens.
这通常是通过设置相机广角镜头得到的。
锗还用作合金组分、萤光灯的磷光粉和作照相机广角镜头和显微镜物镜等光学玻璃组分。
It is also used as a component of alloys, in phosphors for fluorescent lamps, and in the glasses of certain optical components, such as camera and microscope lenses.
锗还用作合金组分、萤光灯的磷光粉和作照相机广角镜头和显微镜物镜等光学玻璃组分。
It is also used as a component of alloys, in phosphors for fluorescent lamps, and in the glasses of certain optical components, such as camera and microscope lenses.
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