In conventional data acquisition in STXM, single energy stacks are restricted within one or two X-ray absorption edges. Several reasons make this procedure advantageous. Firstly, since the zone plate focal distance is a function of the X-ray energy , it changes position according to a pre-established linear equation. During acquisition over long period of time, spurious movements can creep in resulting in loss of focus. Secondly, the zone plate movement is often not perfectly parallel to the X-ray optical axis over the whole energy range. This can result in an unreasonable drop in flux as the beam can be partially blocked by the OSA (order sorting aperture, a higher diffraction order filter) as the zone plate gets misaligned. Lastly, thermal and mechanical drifts are magnified over a wide energy range. Shorter energy ranges and hence smaller acquisition times can overcome this issue. In the case of perovskites, one could be interested in C, N, O K-edges, and I M-edge along with the underlying Pb N-edge as has been