  Single nucleon knockout reactions must be described in a consistent framework
in order to extract information about nuclear structure and reaction
mechanisms. Consistent relativistic models for the direct knockout contribution
to the (e, e'p) and (gamma, p) reactions have been developed and used
previously to examine existing momentum distribution and cross section data for
the two reactions^{1}. We present results of calculations of spin observables
obtained from these models of (e, e'p) and (gamma, p) reactions. For the (e,
e'p) reaction we consider the importance of the choice of kinematics and show
that perpendicular kinematics result in distributions with relatively large
cross sections and comparatively large polarizations. In the (gamma, p)
reactions the photon asymmetry and proton polarization are not very sensitive
to changes in model ingredients when the incident photon energy is less than
100 MeV. For higher energies these observables show increasing sensitivity to
modifications of both the bound and continuum wave functions.
