I bought the recently-launched RF 24/1.4L mainly for astrophotography, though I haven't had the opportunity for that use case yet. I did bring it on a recent trip to San Francisco.
"Sequoia sempervirens" (Muir Woods National Monument)

EOS R8, RF 24mm f/1.4L VCM, 1/60 s, f/6.3, ISO 160
"Jellies" (Steinhart Aquarium, California Academy of Sciences)

EOS R8, RF 24mm f/1.4L VCM, 1/80 s, f/2.5, ISO 3200
Probably most are aware, but this is another lens that requires distortion correction to fill in the corners. On the upside, after correction (with DxO PL) if not constrained to the original aspect ratio, the image ends up about 8% wider (6492 x 4000 output from the 24 MP R8 sensor).
"Sequoia sempervirens" (Muir Woods National Monument)

EOS R8, RF 24mm f/1.4L VCM, 1/60 s, f/6.3, ISO 160
"Jellies" (Steinhart Aquarium, California Academy of Sciences)

EOS R8, RF 24mm f/1.4L VCM, 1/80 s, f/2.5, ISO 3200
Probably most are aware, but this is another lens that requires distortion correction to fill in the corners. On the upside, after correction (with DxO PL) if not constrained to the original aspect ratio, the image ends up about 8% wider (6492 x 4000 output from the 24 MP R8 sensor).