Don't worry, who knows the color correction knowledge of 24 color cards in photography?

This method of use is equivalent to gray board.

It is mainly used in scenes with high shooting accuracy, such as artworks and oil paintings.

The purpose is to eliminate chromatic aberration.

I don't know if you have ever used the gray board. Gray board can only achieve monochrome white balance, which is not enough in the case of discontinuous spectrum.

Like lights. Even in natural light, there are interference light sources and calculation errors in camera imaging.

Color cards are used to correct these color differences. More advanced standard color card, 1 17 color.

The use method is similar to the gray board. After the light distribution is completed, first use the gray card to measure the light, and after determining the accurate exposure, remove the gray card, put the color card in the position of the subject, and shoot the color card.

Then use tuning software (such as inCamera with hieroglyphics) to open the photo of the color card. You can identify the photographed color block and generate a configuration file.

Then, import the configuration file into Photoshop. It should be noted that the correct color space, namely Adobe sRGB, should be selected.

Finally, shoot the subject with the same light and angle, and then apply the color configuration settings obtained above in photoshop.

Complete the color adjustment.

By the way, manual adjustment can only accurately restore the color to the greatest extent, and it is impossible to be completely accurate.

I don't know if I made myself clear. I hope you can understand.