Gray card
A gray card is like a special piece of paper that photographers use to help them make sure their pictures look just right.
When you take a picture, the camera has to figure out how bright the light is and what colors there are. That can be tricky because different lights are different colors and different things reflect light differently.
A gray card helps solve that problem by giving the camera something to compare the light and colors to. The gray card is a plain, neutral color that reflects light evenly. This makes it easier for the camera to figure out what color things should be and how bright they should be.
So when a photographer takes a picture, they first take a picture of the gray card, and then use that picture to help them adjust the colors and brightness of the other pictures they take. This makes the pictures look more like what you would see with your own eyes, and less like they were taken with a camera.
When you take a picture, the camera has to figure out how bright the light is and what colors there are. That can be tricky because different lights are different colors and different things reflect light differently.
A gray card helps solve that problem by giving the camera something to compare the light and colors to. The gray card is a plain, neutral color that reflects light evenly. This makes it easier for the camera to figure out what color things should be and how bright they should be.
So when a photographer takes a picture, they first take a picture of the gray card, and then use that picture to help them adjust the colors and brightness of the other pictures they take. This makes the pictures look more like what you would see with your own eyes, and less like they were taken with a camera.