There is provided a semiconductor film containing an aggregate of semiconductor quantum dots that contain an In element and a Group 15 element and a ligand that is coordinated to the semiconductor quantum dot, in which the Group 15 element includes an Sb element, and a ratio of the number of the In elements to the number of the Group 15 elements in the semiconductor quantum dot is 1.1 or more. There are also provided a photodetection element, an image sensor, and a manufacturing method for a semiconductor quantum dot.