brume

We saw a part of the sunrise because the sky was full of brume , the temperature is only about 3 degree , but many photographers were searching good view ..赶早看日出，但天有云雾，只能看到小许阳光穿透云彩！气温只有3摄氏度左右，但一大班影友还是围湖寻找独特的风景。

Results:The best imagine edge effect and visual sense definition for red free light picture contrast is 0.87. Grey brume is the second important parameter..结果：无赤光像反差为0．87时影像边缘效应、视觉清晰度最佳，灰雾为第二位。