Color difference in photography

This is a problem related to color management. It is necessary to correct the color shift of camera and display.

The problem of camera color cast is mainly solved from two aspects: one is the color cast that may be caused by inaccurate shooting parameters and white balance settings. The second is the color cast of the camera and lens itself.

Solving the color cast in shooting mainly depends on the white balance and the accuracy of exposure.

You can buy a gray card (one side is 18% gray, which is used to calibrate the exposure; One side is white, which is used to calibrate white balance. Taobao sells around 30 yuan).

Before shooting, manually calibrate the white balance with the white edge, then calibrate the exposure with the gray edge, and then shoot.

Today's cameras, after white balance and exposure, are generally not particularly serious under ideal lighting conditions.

To further solve the color cast problem of camera and lens, you can buy a color card (such as Ashley's 24-color card, but fortunately some of them are cheaper, but in general, the price of color cards is more expensive), take a group of photos with fixed exposure and white balance, one of which takes a color card, then use the software that comes with the color card to color in the computer, and then calibrate the colors of other photos in the same group in batches. In this way, no matter what camera takes pictures, the color reproduction is more accurate.

However, the display itself will also appear color cast. To solve the color deviation problem of display, it is necessary to use color corrector such as eye-one or Spider to correct the color of display. Then the ICC file after color correction is loaded into the system. If your monitor is professional, you can also load ICC files into the monitor and repaint the monitor every 2 or 3 months.

But personally, if you just put it online, you can use Photoshop to adjust the color subjectively. Because even if you calibrate your own monitor, others' monitors may not have color calibration, and there will still be color cast problems, which is inevitable.