You asked
Is the viltrox af 50mm f 1 4 pro good for portraits?
Yes, it's a good choice for portraits, as long as you shoot full frame. The lens page lists it for Sony E and Nikon Z mounts, and on full frame it gives a natural, slightly tight view with f/1.4 for soft backgrounds and low light. On an APS-C body it frames like 75mm, which is also a classic portrait length.
It has autofocus but no stabilisation, so keep your shutter speed up when shooting indoors. If you want more working distance and a more flattering perspective, the Viltrox AF 85mm f/1.4 Pro is the classic step up. For more on choosing lenses for people, see the Portraits guide.
Written by Claude from this site's pages.