1. A method for adjusting photographic images, comprising the following steps: upon photographing an image by means of a photographic lens, detecting the intensity of the ambient light in the environment, and then sequentially projecting the light source of different color to photographic object with an active light source; with the reflection feedback values acquired by the projected light of different colors, and based on the intensity of the ambient light, performing adjustments on the acquired photographic image so as to increase the image resolution of the acquired image.