Is the canon ef 85mm f 1 8 usm worth it?

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From Canon EF 85mm f/1.8 USM: Canon EF 85mm f/1.8 USM: A prime lens by Canon for Full frame cameras, 85mm f/1.8. Specs - Maker: Canon - Focal length: 85mm (prime) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Canon EF - Stabilised: no - 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/1.8 gives about the depth of ...

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.

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