Patent ID: 7232410

Claim:
An adjusting mcthod for an endoscope system, comprising: a detection step of detecting, in order to adjust white balance of illumination light rays, an image signal for each of first, second and third ranges of wavelengths reflected from a subject, correspondingly to irradiations of first, second and third illumination light rays, respectively; a first step of comparing a ratio of peak values of first and second image signals with a reference value; a second step of adjusting light amounts of the first and second illumination light rays, correspondingly to a result of the first step; a third step of determining whether or not a ratio of peak values of the second and third image signals is within a first setting range, correspondingly to a result of the second step; and a fourth step of readjusting the light amounts of the first and second illumination light rays, correspondingly to a result of the third step.