  In a recent work by Fernandes [arXiv:2305.10382], an exact stationary and
axisymmetric solution was discovered in semiclassical gravity with type-A trace
anomaly, identified as a quantum-corrected version of the Kerr black hole. In
this study, we explore the observational signatures of this black hole
solution. Our investigation reveals that there exist prograde and retrograde
light rings, whose radii increase monotonically with the coupling parameter
$\alpha$. We also observe that when $\alpha$ is negative, the shadow area for
the quantum-corrected black hole is smaller than that of the Kerr black hole,
whereas when $\alpha$ is positive, the area is larger. Furthermore, for a
near-extremal black hole, its high-spin feature (the NHEKline) is found to be
highly susceptible to disruption by $\alpha$. Moreover, we discuss the images
of the quantum-corrected black hole in the presence of a thin accretion disk
and compare them to those of the Kerr black hole. Our study highlights the
importance of near-horizon emission sources in detecting the effects of quantum
corrections by black hole images.
