1. An X-ray machine, comprising: a radiation source; and an image intensifier, wherein a digital camera is located downstream of the image intensifier and includes a pixel matrix switchable between a high and a low resolution, wherein the image intensifier is adapted to display on an output screen an image that is dependent on incident X-radiation and is picked up by the digital camera, wherein sharpness of the image displayed on the output screen varies depending on a resolution set for the digital camera.