1. An image-capturing apparatus for capturing an image, the image-capturing apparatus comprising: a face detector configured to detect a face based on an image signal obtained by image capturing; an expression evaluation section configured to evaluate an expression of the detected face and to compute an expression evaluation value indicating a degree to which the detected face is close to a specific expression; an image recording controller configured to, when the expression evaluation value satisfies a predetermined condition related to a threshold value, automatically record an image signal obtained by image capturing, wherein the threshold value is selected in response to an input operation performed by a user from among a plurality of threshold values corresponding to a plurality of different degrees to which the detected face is close to the specific expression, and when the face detector detects a plurality of faces and the expression evaluation section computes the expression evaluation value for each of the plurality of the detected faces, the image recording controller automatically records an image signal when the expression evaluation values for the detected faces each exceed the selected threshold value; and a face image generator configured to normalize the image signal of the face detected by the face detector into image data of a predetermined resolution, wherein the expression evaluation section computes the expression evaluation value using the normalized image signal.