Аннотация:We discuss the heuristic value of black hole's geodesics analysis. Such geodesic structure controls the motion of a test particle in the gravitational potential, revealing itself in the accretion picture and black hole shadow form on the accretion disk. We exemplify this approach for Dadhich-Rezania and Maeda-Dadhich black holes and conclude that for a waste class of gravity models geodesic analysis is unable to provide useful constraints.