What is the yongnuo yn50mm f 1 8 df dsm good for?

Here is what the site says about that.

From Yongnuo YN50mm f/1.8 DF DSM: Yongnuo YN50mm f/1.8 DF DSM: A prime lens by Yongnuo for Full frame cameras, 50mm f/1.8. Specs - Maker: Yongnuo - Focal length: 50mm (prime) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z - Stabilised: no - Autofocus: yes What it frames like - On full frame (Sony E, Nikon Z): as marked, 50mm. - On APS-C (Sony E, Nikon Z): like 75mm on full frame; f/1.8 ...

From Yongnuo YN50mm f/1.8 DA DSM: Yongnuo YN50mm f/1.8 DA DSM: A prime lens by Yongnuo for APS-C cameras, 50mm f/1.8.

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