Images of a geometrically thick accretion disk with inner radius r_in = 2.91M in a Kerr spacetime with spin parameter a = 0.8M (left column). Same image, but with a disk inner radius at r_in = 3.5M, in a rotating boson star spacetime defined by (k = 1, ω = 0.77), which corresponds to the same value of the spin parameter (middle column). Same boson-star spacetime with r_in = 2.09M, corresponding to the ICO of that spacetime (right column). As in all figures, the bottom row corresponds to the top row images blurred to the EHT resolution of 20 μas; the dashed blue circle has a diameter of 40 μas (size of the ring feature reported by the EHT) and the blue arrow shows the projected direction of the approaching jet.