Kerr and dilaton GRRT images at R_high = 40 in the SANE simulation. The images are averages of 100 snapshots over 1000 M simulation time (∼6 h for Sgr A^*). This model configuration shows the largest difference between different electron distribution (eDF) functions (panel f) in the Dilaton spacetime in the given parameter space. The bottom row shows pixel-by-pixel differences between the two spacetimes at a given eDF.