Problem to be solved: to provide an endoscope apparatus capable of storing still images of a plurality of imaging images necessary for the diagnosis of the size or shape of an object to be observed, and an operation method thereof, and a program for an endoscope apparatus.When the still picture acquisition instruction is performed, the measurement auxiliary light is reduced at the first timing, and the illumination light is turned on, and the illumination light and the measurement auxiliary light are turned on at the second timing or the third timing.A still image of the first imaging image obtained at a first timing, a still picture of a second imaging image obtained at a second timing, or a marker for measurement which is set in accordance with a position of a specific region, the rest of the third imaging image displayed on a second imaging image or a first imaging image obtained at a third timing Save at least two of the paintings.Diagram【課題】観察対象の大きさ又は形態の診断に必要な複数の撮像画像の静止画を保存することができる内視鏡装置及びその作動方法並び内視鏡装置用プログラムを提供する。【解決手段】静止画取得指示が行われた場合において、第１タイミングにて計測補助光を減光し、且つ照明光を点灯し、第２タイミング又は第３タイミングにて照明光及び計測補助光を点灯する。第１タイミングにて得られる第１撮像画像の静止画、第２タイミングにて得られる第２撮像画像の静止画、又は、特定領域の位置に応じて設定される計測用マーカを、第３タイミングにて得られる第２撮像画像又は第１撮像画像に表示した第３撮像画像の静止画のうち少なくとも２つを保存する。【選択図】図７
