Quality of the M87* shadow movies obtained with different orbital separations of the EHI system setup. The movie quality is shown with the averaged normalized cross-correlation against the true image, or NXCORR, at two frequencies: (1) 230 GHz, shown in the top panel; (2) 560 GHz, shown in the bottom panel. Red, green and blue lines correspond to reconstructed movies with temporal resolutions of 8.9 h, 3.7 days and 37 days, respectively. Dashed lines correspond to snapshot imaging; solid lines correspond to dynamical imaging. The red semi-transparent area indicates orbital separations with the best quality of reconstructed movies, based on the quality of individual frames in the movies.