1. An image processing method, applied to an electronic apparatus, wherein the image processing method comprises: performing a photometry to current environment; determining a unit shutter speed according to a result of the photometry, a specified photosensitivity, and a specified aperture value; and capturing, when a first operation is detected, a plurality of images sequentially by using the specified photosensitivity, the specified aperture value and the unit shutter speed and synthesizing the plurality of images until a second operation is detected.