How does Lightroom 5 avoid or remove ripples after adjusting the gradient filter?

Most photographers call this phenomenon' color disorder' or' color fault'. Most of the reasons are that there are not enough color bits in the image, and it is impossible to smoothly change when color transition is needed. For example, you use 1024 grains of sand to form a belt 10 cm long. The color difference between each sand and the sand next to it is 1, and the color transition of the ribbon you see will be smooth. But if you put four blocks of different colors together, it is also 10 cm, but the color difference between each block and the next block is 256. What you see is four distinct blocks.

So in order to avoid losing order, I know the following methods:

1. Increase the number of color bits of the original image, for example, first convert it into a 16-bit image or even a 32-bit image, then copy two layers, increase one exposure, decrease one exposure, and do gradient processing after HDR. (The operation is complicated, and it is suitable for situations where only low-quality materials are needed to be fine-tuned. )

2. Processing pictures containing more information, such as original photos in original format or lossless compressed images, such as TIF and PNG. (The method is simple and suitable for obtaining high-quality original images conditionally. )

3. Picture mode: First, change the picture mode from rgb mode to lab mode, and then do light and dark gradient processing. (The method is more general, because rgb mode records the color and lightness of each pixel at the same time, while LAB mode describes each pixel twice, namely lightness and color. )

4. Create a new layer in PS to adjust brightness or cover a brightness layer, and then create a mask for gradient operation. (If the quality of the original image is low, it may not be possible to improve the phenomenon of order loss. )

5. Phased processing means that the light and shade gradient is less each time, and the light and shade gradient is done several times until the effect in your mind is achieved. There are many complicated operation steps, which are suitable for situations where the final effect is clear and known. )

As for removal, there are several methods:

1. Increasing the noise of the whole picture is actually reducing the signal-to-noise ratio of the picture. The contour of the transition will be covered by noise, so the step loss seems to be improved. (The image quality will be degraded to a certain extent, which is suitable for large-resolution images. )

2. After selecting each out-of-order contour, do fuzzy processing. (The workload is relatively large, and the feathering degree of the selected area needs to be carefully controlled. )

3. Use the stamp tool or repair tool to repair the lost contour line. (It's a huge workload. It's cool to take pictures and retouch pictures for a while. It's a true portrayal of the crematorium. )

4. After selecting the lost contour line in the box, fill it with content identification. (Compared with the above scheme, the speed is slightly faster, and the size of the selection can be flexibly controlled, but sometimes there are problems in content recognition, especially in areas with large light-dark transition).

Of course, there is another possibility, that is, the driver of the display or graphics card. There is nothing wrong with the screen itself, but with the monitor ... At this time, you may need to consider updating the driver or replacing the monitor.