方法：通过数字化胃肠机的特有功能的应用，对照片的清晰度、对比度、废片率，疾病漏诊率等方面进行探讨。
Methods The definition and contrast of the film, and the rate of waste film and missed diagnosis were analyzed in this article.
它在夜间拍摄的照片的清晰度也更高，而且总的来说颗粒感也更轻了，这一点在下方的样片对比中就能看出来。
Images taken in the evening also turned out better, with sharper definition of objects and overall less graininess, as you can see below.
照片的清晰度足矣让我们区分出其上是岩石还是人造物，距离最近的一张照片是阿波罗17号的着陆点（如图），这也是迄今为止距此着陆点最近的一张照片。
They offer a sharper look that more clearly distinguishes man-made objects from rocks. The closest images are of the Apollo 17 site from 1972.
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