If your brother is a photographer, you'd better choose the polarized sunglasses which could protect the eyes from the strong lights which could damage the eyes. Compared with other common sunglasses, the polarized sunglasses own special function which could do good for your eyes. The effects of the polarized sunglasses are to effectively eliminate and filter beam of scattering light. It can make the light go through the optical input eyes and become the visual image. Thus, the vision is clear and natural as the principle of shutter shade. At last, the light has been adjusted into synthetic light and enters indoor and the natural scenery looks soft and not dazzling. You could choose such type of polarized sunglasses, like the oakley brand which is more suitable for your brother.