Improved 2-equivalent magneta couplers correspond to the following formula ##STR1## in which B is a stabilizing group,X is a phenylmercapto group substituted in a certain way,Y is halogen, alkoxy, alkyl, alkylsulfonyl, acylamino, alkoxycarbonyl, aminocarbonyl, amino, trifluoromethyl or cyano,n, o=0, 1 or 2p=.ltoreq.3-o andq=.ltoreq.5-nwith the proviso that, where n, o, p and/or q have a value of >1, the substitutents B and Y may be the same or different.