Is it necessary to take a gray gradient shot in the landscape?

When the shooting contrast is large, it is necessary to shoot the gray gradient lens in the landscape. Because it is necessary to ensure brightness and color, but also to lose the dark details. There must be. Of course, high-end cameras, such as Canon G 12, do not need to be equipped with a medium gray gradient lens. For example, when we shoot the sky and the earth (grassland, desert, ocean, mountains), the sky is seriously overexposed and the ground is seriously underexposed, resulting in the disappearance of scene details. However, it is not easy to make good use of the gray mirror. At least two levels of gray-scale mirrors, P 12 1 and P 122, should be prepared to cope with different contrast levels.

The closed exposure and post-pull gradient you mentioned can also achieve the goal, but the effect is not as good as directly using the appropriate medium gray mirror. If it is synthetic, Fuji EXR sensor is the best at present. His wide dynamic range photography is to take pictures with two groups of 8 million pixels at the same time and synthesize them with CPU, so that all the high and low light details can be preserved. This is more effective than grey mirror in the middle and PS in the later period.