Is the zeiss loxia 21mm f 2 8 worth it?

Here is what the site says about that.

From Zeiss Loxia 21mm f/2.8: Zeiss Loxia 21mm f/2.8: A prime lens by Zeiss for Full frame cameras, 21mm f/2.8. A small manual-focus wide-angle, popular for landscapes and astro. Specs - Maker: Zeiss - Focal length: 21mm (prime) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Sony E - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E): as marked, 21mm. - On APS-C (Sony E): like ...

From Sensor sizes: Is full frame worth it?: For low light, events, and portraits with very shallow depth of field, yes. For travel, street, wildlife on a budget, and most hobby photography, a good APS-C camera with good lenses is enough, and you'll carry it more. Lenses and light matter more than the last stop of sensor performance.

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