Is the canon ef 85mm f 1 4l is usm sharp wide open?

Here is what the site says about that.

From Canon EF 85mm f/1.4L IS USM: Canon EF 85mm f/1.4L IS USM: A prime lens by Canon for Full frame cameras, 85mm f/1.4. Specs - Maker: Canon - Focal length: 85mm (prime) - Maximum aperture: f/1.4 - Made for: Full frame sensors - Mounts: Canon EF - Stabilised: yes - Autofocus: yes What it frames like - On full frame (Canon EF): as marked, 85mm. - On APS-C (Canon) (Canon EF): like 136mm on full frame; f/1.4 gives about the depth of ...

From Canon EF 17-40mm f/4L USM: Canon EF 17-40mm f/4L USM: A zoom lens by Canon for Full frame cameras, 17-40mm f/4. An older, light L wide zoom that is plentiful used.

Quoted from this site's pages.