1. An image capturing method, suitable for an electronic apparatus, the image capturing method comprising: calculating a plurality of feature points within a first image shot by the electronic apparatus, wherein the first image includes one or more objects; calculating a maximal rotation angle of the electronic apparatus rotating along a direction according to a distribution of the feature points within the first image, wherein the maximal rotation angle of the electronic apparatus rotating along the direction is calculated according to a density of the feature points around a side edge of the first image corresponding to the direction, and the maximal rotation angle is positively correlated to the density of the feature points around the side edge; and shooting a second image automatically when the electronic apparatus has been rotated by the maximal rotation angle along the direction; wherein the first image is captured by the electronic apparatus when the electronic apparatus is at an initial orientation, and the feature points correspond to at least boundaries of each of said one or more objects in the first image at the initial orientation, wherein when said one or more objects comprises a plurality of objects, the objects comprise both animate and inanimate objects.