What We Like
+World's widest-angle zoom lens with exceptional 190° field of view at 7mm circular fisheye
+Unique dual-functionality: switches from circular fisheye (7mm) to frame-filling diagonal fisheye (14mm) on full-frame cameras
+Advanced optical design with 16 elements including 5 UD elements and 2 aspheric elements for superior image quality and minimal aberrations
+Fast f/2.8-3.5 variable aperture brighter than predecessor EF 8-15mm (f/4), enabling strong low-light performance
+Innovative drop-in rear filter system accommodates variable ND and circular polarizing filters despite bulbous front element
+Native RF-mount autofocus with smooth STM motor ideal for video; minimal focus breathing (0.4% at wide) and VR content creation capability
Worth Knowing
−Extreme price point at $1,899 limits accessibility; third-party alternatives like Laowa 8-15mm f/2.8 offer similar coverage for under $700
−Niche creative tool not suited for general photography; extremely specialized for landscape, astro, sports, and VR work
−Bulbous front element requires caution during close-up shooting and restricts lens hood usability—hood can cause vignetting at 7mm
−Circular fisheye effect on full-frame depends on camera mode; standard 16:9 video crops the circle top-to-bottom without open-gate recording