How is the picture with a particularly wide picture taken?

It was taken with a connecting machine, also called a shaking head machine.

Simply put, when we take pictures, the camera and the negative are stationary, while when we take pictures on the road, the negative rolls from one end to the other at a constant speed. At this time, the lens also turns from one side to the other, and the light shines on the film through a narrow slit. Because the rotation of the lens and the winding of the negative are synchronous, you can shoot a big scene. It is precisely because of the working mode of connecting flights that when taking such a big group photo, everyone is not standing in a row, but standing on an arc with the same radius centered on the camera, and the shooting range of the camera is actually swept into a fan shape. Because it is of equal radius, a flat and wide picture is formed on the negative. However, if you look closely, you will find that the perspective of buildings and other objects behind people is distorted, so you must pay attention to choosing empty or difficult-to-see venues when taking a big group photo of hundreds of people.

The conveyor can record a wide scene and achieve a 360-degree viewing angle effect. Mainly used for landscape photography or group photography.