Candidate image presenting method using thumbnail image and image signal processing device and imaging device performing the same

The image signal processing device and an imaging apparatus for presenting method candidate image using the thumbnail images, and do this are provided. One embodiment of an image signal processing apparatus according to the, by generating a plurality of frame image data to the processing of raw image data in units of frames and generates a plurality of thumbnail image data corresponding to a frame of the generated plurality of image data, each line output, and it can be output after the frame image data corresponding to the thumbnail image data selected by the selection signal. According to this, it provides the user with thumbnail images after performing the shooting in a variety of shooting modes within a short time and taken to the shooting mode appropriate, without missing a moment of need by the user to select the desired frame image based on the thumbnail image It has the effect to be.