Non-axisymmetric disk compared to axisymmetric case for spin a = 0.8 M. Only blurred images are shown. The second, third, and fourth panel from the left are obtained by considering a hotter region in the disk defined by a temperature increment of T₀/T_inner = 2, 4, or 8, respectively. This comparison shows that the non-axisymmetry of the flow must be substantial (approximately an order of magnitude contrast) to overcome the beaming effect.