The textbook is devoted to the description of the light field formation in turbid media, such as atmosphere and ocean. By the light field is understood the description of the electromagnetic field propagation (transfer) in the ray approximation. The basis of presentation is the physical theory of radiation transfer, which allows covering the whole range of issues relating to the transfer of polarized radiation in a turbid medium with a physical level of rigor: electrodynamics basis of photometric and the vectorial radiative transfer equation (VRTE), analysis of absorption and scattering of light in a medium, methods for solving VRTE for different geometries of a turbid medium and boundary conditions. The presentation peculiarity is bringing all the proposed solutions to the practical algorithms with their illustrations by concrete codes in the Matlab. All parts of codes are interconnected that allows showing the light fields calculation in real turbid media at the end of textbook.