  The massless field of spin 1 is defined on the eight-dimensional
configuration space; this space is a direct product of Minkowski space and of a
two-dimensional complex sphere. Field equations for the spin-one field are
derived from a Dirac-like Lagrangian separately for the translation group and
Lorentz group parts. It is shown that a Dirac form of Maxwell equations
(so-called Majorana-Oppenheimer formulation of electrodynamics) follows
directly from the field equations of translation group part. The photon field
is realized via Biedenharn type functions on the Poincar\'{e} group. This
allows us to consider both Dirac and Maxwell fields on an equal footing, as the
functions on the Poincar\'{e} group.
