Experimental demonstration of iMZ measurements efficiency of ELT static residuals (polishing, differential pistons...) (from HAR-MONI simulations, Zieleniewski et al. 2015) and correction with a 512 × 512 SLM. Upper left: SLM phase commands. Center upper part: phase measured with the iMZ, by calibrating directly on the statics SLM map and corresponding PSF (Center Low part). Right upper part: phase in the pupil plane measured with the iMZ, after the SLM correction has been applied and corresponding PSF (Right lower part).