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Recently we presented a successful strategy to extract the position of thetwo $\Lambda(1405)$ poles from experimental photoproduction data on the $\gammap \to K^+ \pi^0 \Sigma^0 $ reaction at Jefferson Lab. Following a similarstrategy, we extend the previous method to incorporate also the isospin 1component which allows us to consider in addition the experimental data on$\gamma p \to K^+ \pi^\pm \Sigma^\mp$. The idea is based on considering aproduction mechanism as model independent as possible and implementing thefinal state interaction of the final meson-baryon pair based on smallmodifications of the unitary chiral perturbation theory amplitudes. Good fitsto the data are obtained with this procedure, by means of which we can alsopredict the cross sections for the $K^- p \to \bar K N$, $\pi \Sigma$,$\pi\Lambda$ reactions for the different charge channels. Besides the two polesfound for the $\Lambda(1405)$ resonance, we discuss the possible existence ofan isospin 1 resonance in the vicinity of the $\bar K N$ threshold.

On the isospin 0 and 1 resonances from $\pi \Sigma$ photoproduction data