1. A data processing apparatus comprising: image capture mode storing means for storing image capture modes each associated with a feature value related to a subject as a selection condition for selecting an image capture mode candidate according to the subject; feature value extracting means for extracting a feature value included in captured data that is captured by converting incident light from the subject; image capture mode candidate selecting means for selecting image capture mode candidates from among the image capture modes stored in the image capture mode storing means, on the basis of the feature value extracted from the feature value extracting means; display control means for displaying on display means the image capture mode candidates selected by the image capture mode candidate selecting means; operation accepting means for accepting a selecting operation for selecting a desired image capture mode from among the image capture mode candidates displayed on the display means; image capture mode setting means for setting the image capture mode selected by the selecting operation; and reduced image generating means for generating a reduced image by reducing, when the selecting operation for selecting a desired image capture mode is accepted by the operation accepting means, a captured image wherein the display control means displays the reduced image together with an indicator indicating an image capture mode that is set at the time when the selecting operation is accepted.