Voigtl nder portrait heliar 75mm f 1 8 vs voigtl nder nokton 75mm f 1 5 aspherical?

Here is what the site says about that.

From Voigtländer Nokton 75mm f/1.5 Aspherical: Voigtländer Nokton 75mm f/1.5 Aspherical: A prime lens by Voigtländer for Full frame cameras, 75mm f/1.5. Sold for Leica M as the Vintage Line version. Specs - Maker: Voigtländer - Focal length: 75mm (prime) - Maximum aperture: f/1.5 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF, Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon ...

From Voigtländer Portrait Heliar 75mm f/1.8: Voigtländer Portrait Heliar 75mm f/1.8: A prime lens by Voigtländer for Full frame cameras, 75mm f/1.8. Specs - Maker: Voigtländer - Focal length: 75mm (prime) - Maximum aperture: f/1.8 - Made for: Full frame sensors - Mounts: Sony E, Nikon Z, Canon RF - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Sony E, Nikon Z, Canon RF): as marked, 75mm. - On APS-C (Sony E, Nikon Z): ...

Quoted from this site's pages.