PROBLEM TO BE SOLVED: To obtain a high quality image in a more preferable mode. A medical observation device includes a medical observation device and an image processing device, and the medical observation device has a plurality of image pickup elements and a branch optical system for separating incident light into a plurality of lights, and is separated by the branch optical system. Each of the plurality of lights is guided to at least one of the plurality of image pickup elements, and two or more image pickup elements of the plurality of image pickup elements pick up images having different brightness from each other. The image pickup device is arranged such that the optical distances between the image pickup device and the branch optical system are different from each other, and the image processing device has a wider dynamic range than each of the plurality of images based on the plurality of images having different brightness. A second composite image having a deeper depth of field than each of the plurality of images captured by each of the two or more image capturing elements having different optical distances between the first composite image and the branch optical system. A medical observation system for generating at least one of a composite image of and. [Selection diagram] Figure 1【課題】より好適な態様で高画質な画像を取得可能とする。【解決手段】医療用観察装置と画像処理装置とを含み、医療用観察装置は、複数の撮像素子と入射光を複数の光に分離する分岐光学系とを有し、分岐光学系により分離された複数の光のそれぞれは、複数の撮像素子のうちの少なくともいずれかに導光され、複数の撮像素子のうち、２以上の撮像素子それぞれにより互いに明るさの異なる画像が撮像され、２以上の撮像素子については、分岐光学系との間の光学的距離が互いに異なるように配設され、画像処理装置は、互いに明るさの異なる複数の画像に基づく当該複数の画像それぞれよりもダイナミックレンジの広い第１の合成画像と、分岐光学系との間の光学的距離が互いに異なる２以上の撮像素子それぞれにより撮像された複数の画像に基づく当該複数の画像それぞれよりも被写界深度の深い第２の合成画像と、のうち少なくともいずれかを生成する、医療用観察システム。【選択図】図１
