How to take this photo in the snow? It is said that it is a flash? What is flashover?

Off-line flash refers to off-line flash, which uses an external flash but is not connected with a hot start, and controls the flash of a flash not far away through a wireless signal or a flash from a camera.

In this picture, the photographer put the flash on the right side of the old man, that is, in front of the photographer, but it was blocked by the old man. In this way, the light is all backlit, which brightens the outline of the old man's hair and clothes, separates the old man from the dark environment and highlights the key points. At the same time, the snowflake also brightened (whether it is true or not).

At the same time, we found that the side face of the old man is also very clear. It can be speculated that the photographer uses light to flash, and uses the camera's built-in flash or the power-off external flash to fill the light on the front and flash another light on the back. Usually, external flashlights have sensors to sense the flashlights. As long as you adjust to the corresponding mode, several lights can flash at the same time.

By the way, when you take pictures in snowy days, you usually have to flash to get bright snowflakes.

I hope my answer will satisfy you.