An 3D camera module includes a first and a second imaging units, a storage unit, a color separation unit, a main processor unit, an image processing unit, a driving unit, an image combining unit and two OIS units. The first and second imaging units capture images of an object(s) from different angles. The color separation unit separates the images into red, green and blue colors. The main processor unit calculates MTF values of the images and determines a shooting mode of the 3D camera module. The image processing unit processes the images to compensate for blurring of the images caused by being out of focus. The driving unit drives the first and second imaging units to optimum focusing positions according to MTF values. The image combining unit combines the images into a 3D image. The OIS units respectively detect and compensate for shaking of the first and second imaging units.