PROBLEM TO BE SOLVED: To provide an endoscope apparatus, with a change in an observation magnification by a variable-power zooming operation, capable of continuously changing to an observation image suited for an endoscopic diagnosis at the observation magnification, and improving the diagnosis accuracy without making an operator feel incongruity.SOLUTION: An endoscope apparatus 100 includes: lighting means having a plurality of light sources 47 and 49 generating light with mutually different spectra and illuminating a subject； imaging means 21 for capturing an image of the subject； and observation magnification change means 81 for changing an observation magnification of the subject to be captured by the imaging means 21. The endoscope apparatus further includes light quantity ratio change means that changes exit light quantity ratios of the light sources 47 and 49 according to observation magnifications set by the observation magnification change means. The endoscope apparatus is configured to change a relationship between the observation magnification to be changed by the light quantity ratio change means and an exit light quantity ratio of the plurality of light sources 47 and 49 according to the change in the observation magnification.SELECTED DRAWING: Figure 1【課題】ズーム変倍操作による観察倍率の変更に伴って、その観察倍率での内視鏡診断に適した観察画像に連続的に変化させることができる内視鏡装置を提供し、これにより術者に違和感を持たせることなく、しかも診断精度を向上させることを目的とする。【解決手段】互いに異なるスペクトルの光を発生する複数の光源４７，４９を有して被検体を照明する照明手段と、被検体を撮像する撮像手段２１と、撮像手段２１により撮像される被検体の観察倍率を変更する観察倍率変更手段８１と、を備えた内視鏡装置１００であって、観察倍率変更手段により設定される観察倍率に応じて複数の光源４７，４９の出射光光量比を変更する光量比変更手段を有し、光量比変更手段により変更される観察倍率と複数の光源４７，４９の出射光量比との関係を、観察倍率の変化に伴って連続的に変化するよう構成した。【選択図】図１
