What We Like
+Exceptional sharpness wide open at f/1.4 with excellent center and edge performance
+Compact and lightweight design (636g) while maintaining L-series build quality and pro-grade construction
+Silent VCM autofocus with fast, accurate focus acquisition and virtually no focus breathing
+Ideal hybrid design for both stills and video with clickless iris ring and minimal focus breathing
+Smooth, attractive bokeh from 11-blade aperture; strong background separation for portraits
+Matched size and design with other f/1.4 VCM primes enables seamless gimbal/rig transitions
Worth Knowing
−No optical image stabilization, requiring camera IBIS or tripod for handheld video
−Iris ring and some control ring features only work on EOS R1 and R5 Mark II (not on older RF-mount cameras)
−Not a macro lens despite close focusing; maximum magnification limited to 0.12x
−Clickless aperture ring requires more frequent viewfinder monitoring compared to clicked rings