Embodiments of the present invention provide method and apparatus for determining audience affinity andor aptitude in portions of media works and for developing information that represent measures of the audience affinity andor aptitude. A two-dimensionally designed detector array generates output data which are filtered in a suitable way and back-projected in order to obtain at least one sectional image which represents the absorption values of the section of the object to be examined in a particular movement state. A crosshair is disposed in the ocular housing.