For the research of large measurement error of film badge used in high energy radiation field and the systematical investigation on the secondary electron intensification effect of metallic filters which has only been studied respectively in radiographic dosimetry using film badges and nondestructive testing, mutual effects of photon energy, material and thickness of filters on photographic density are measured. In any filter materials maximum intensification factor shows the maximum at 200-500 keV, the minimum at approximately 1 MeV and the reincreasing beyond 2 MeV with the increase of photo energies. For the reincreasing in high energy region, the radiation damage of silver halide crystals by high energy negative and positive electrons is supposed. The intensification factor increases with the mass of filter materials. But it does not agree with the results by electronic measurements.