  Radiative decays of the spin 1/2 baryonic resonances R with the decay mode R
-> KN in case of small energy release are considered. Pentaquark is an example
of such resonance. It is shown that in case of positive resonance parity
corrections to the soft photon radiation formula are large even at low photon
energies > 20 MeV and structure terms contributions may be essential, if R size
> 1 fm. This effect is absent in case of negative parity. Particularly,
measurements of the gamma spectrum in pentaquark radiative decays may allow us
to determine its parity.
