Canon ef 11 24mm f 4l usm vs canon ef 8 15mm f 4l fisheye usm?

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From Canon EF 8-15mm f/4L Fisheye USM: Canon EF 8-15mm f/4L Fisheye USM: A zoom lens by Canon for Full frame cameras, 8-15mm f/4. Specs - Maker: Canon - Focal length: 8-15mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Canon EF - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon EF): as marked, 8-15mm. - On APS-C (Canon) (Canon EF): like 13-24mm on full frame; f/4 gives about the depth of ...

From Canon EF 11-24mm f/4L USM: Canon EF 11-24mm f/4L USM: A zoom lens by Canon for Full frame cameras, 11-24mm f/4. Specs - Maker: Canon - Focal length: 11-24mm (zoom) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Canon EF - Stabilised: no - Autofocus: yes What it frames like - On full frame (Canon EF): as marked, 11-24mm. - On APS-C (Canon) (Canon EF): like 18-38mm on full frame; f/4 gives about the depth of ...

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