1. An apparatus for examining objects, in particular documents of value, identification or security documents, having at least one detector device ( 1, 10 - 15 ) for detecting at least one property of an object to be examined ( 5 ), and for generating at least one detector signal (S) corresponding to the detected property, wherein the detector device ( 1, 10 - 15 ) and the object ( 5 ) are movable relative to each other in a transport direction ( 1 ), and the detector device ( 1, 10 - 15 ) extends over at least a partial area of the object ( 5 ), characterized in that the detector device ( 1, 10 - 15 ) has at least two extensions (A, B) of different magnitude in the transport direction (T).