PROBLEM TO BE SOLVED: To provide an imaging observation device capable of improving visibility of an object and capable of displaying an image easy for observation.SOLUTION: An imaging observation device of this disclosure comprises: an imaging part for imaging a subject under a plurality of imaging optical conditions different from each other simultaneously, and generating a plurality of images under the different imaging optical conditions sequentially; a display operation part for receiving an input from an operator; an image synthesizing part for synthesizing the plurality of images with a synthetic ratio corresponding to the input, based on the input at the display operation part, and for generating synthetic images sequentially; and a display part for displaying the synthetic images.【課題】対象物の視認性を高め、観察のしやすい画像を表示し得る撮影観察装置を提供する。【解決手段】本願に開示された撮影観察装置は、被写体を複数の互いに異なる撮影光学条件で同時に撮影し、前記異なる撮影光学条件による複数の画像をそれぞれ逐次生成する撮像部と、操作者からの入力を受け付ける表示操作部と、前記表示操作部における入力に基づき、前記複数の画像を前記入力に応じた合成比率で合成し、合成画像を逐次生成する画像合成部と、前記合成画像を表示する表示部とを備える。【選択図】図1