1. An imaging apparatus, comprising: an image-capturing element that outputs image signals with linearity representing a plurality of color components by capturing a subject image passing through a photographic lens; and an analyzing device that executes scene analysis of a photographic image by using the image signals with linearity, wherein: the analyzing device extracts an achromatic area within an entire area of the photographic image based upon continuity of first spectral characteristics and continuity of second spectral characteristics, the first spectral characteristics manifesting over the entire area and the second spectral characteristics manifesting in small areas defined by dividing the entire area, and the analyzing device compares a first curve representing the first spectral characteristics manifesting over the entire area with a second curve representing the second spectral characteristics manifesting in the small area, and extracts the small area as the achromatic area if the first curve assumes a shape substantially matching a shape of the second curve.