a reducing focusing collimator 15 for the same reason as for the camera housing 20 the interior space 13 of the x ray objective 10 is filled with nitrogen or helium to prevent icing due to residual water inside the housing to prevent the gas filling in the interior space 13 of the x ray objective 10 from escaping when the x ray objective 10 is exchanged both the beam entrance opening 16 of the objective housing 14 and the beam exit opening 12 are each provided with a window that is transparent for low energy x ray radiation these windows can also be made for example from beryllium or a polymer foil a schematically illustrated threaded lock or bayonet lock 11 allows ready exchange of the x ray objective against a different objective which has for example different x ray optics in this way the x ray camera 1 according to the invention can be easily adapted to a technical application for visualizing and documenting the sample an observation device configured as an optical camera system 50 operating in the visible optical range is associated with the x ray color camera 1 a digital color camera 51 is used for this purpose the optical axis of the color camera 51 is deflected by an x ray transparent or mechanically pivotable mirror 53.