Results: the best imagine edge effect and visual sense definition for red free light picturecontrast 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。
3
The marked color contrast between Mars and the bright blue star was easy to discern by eye, but is further enhanced in the picture through the use of a diffusion filter.