What should I pay attention to when purchasing a grid?

Pay attention to the size, grid ratio, grid density and focal length of the grid when purchasing the grid.

Recently, some customers have consulted our car and grid. They want to be placed on their film bed. We have a car and a grid. The size of the grid is 15*18 or 18*18, and the grid ratio is 8: 1, 10:1, 12:1, focal lengths are 1m, 1.1m, 1.2m, 1.3m, 1.5m, 1.8m.
At present, the grid can be used on equipment such as a film holder, filming machine and image intensifier. The grid used on the camera holder and the filming machine is square, and the grid used at the input end of the image intensifier is circular. The focal length used on the camera frame is 1.8 meters, and the focal length of the X–ray machine is 1.1.1, 1.2, 1.3, 1.5 meters. The grid can be customized according to customer requirements.

Author：Alina