Illustration of the planet signatures obtained when performing the ADI, setting δ_min = 0.5λ/D. These have been obtained by simulating two identical noiseless planetary PSF, separated by δ_min and then subtracted one from the other. Left: planet signature obtained without high-pass filtering of the raw data. Right: planet signature obtained when the raw data have been filtered of their low frequencies (F = 1/4). This time secondary opposite lobes surround the main lobe.