Single sand body occurs generally as tabular mass or wide lens.

单砂体多呈板状和宽透镜状。

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The photographer must know how to minimize the inherent optical distortion of a very wide Angle lens.

摄影师必须知道如何使很宽的广角镜头固有的光学畸变最小化。

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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.

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。

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"I set up one camera with a wide-angle lens for a wide view of the whole cathedral, and another with a longer lens trained on the centre of the cathedral floor below, " says Lipinski.

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Installing the PT-AE8000U is made easy with a 2x zoom lens and wide range of lens shift.

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It can take approximately 2, 000 pictures a day and has a 136 degree wide angle lens.

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