PROBLEM TO BE SOLVED: To provide a radiation image capturing system which achieves both of a first mode in which a wide image-capturing angle range enables acquisition of more pieces of image information, and a second mode in which rough image-capturing is performed, with one device.SOLUTION: A radiation image capturing system comprises: a radiation detector for outputting a first radiation image which is composed of image information in single-pixel units and has a first resolution or a second radiation image which is composed of read image information in multi-pixel units and has a second resolution lower than the first resolution and a control section which instructs a radiation irradiation section to perform tomosynthesis image-capturing in a first image-capturing angle range and acquires a plurality of first radiation images output from the radiation detector using a first radiation image acquisition method, in the case of the first mode, and instructs the radiation irradiation section to perform the tomosynthesis image-capturing in a second imaging angle range included in the first imaging angle range and being narrower than the first imaging angle range and acquires a plurality of second radiation images output from the radiation detector using a second radiation image acquisition method, in the case of the second mode.
