You asked
Is the ttartisan af 50mm f 1 8 neo sharp wide open?
I don't have test results or sharpness ratings for the TTArtisan AF 50mm f/1.8 Neo, so I can't say how sharp it is at f/1.8. What I can tell you is that it's a full frame 50mm prime with autofocus, and it fits Sony E, Nikon Z and L-Mount bodies. On APS-C it frames like about 75mm. You can see the full spec list and the compatible cameras on its lens page.
If you're shooting wide open, the main thing to know is that f/1.8 gives very thin depth of field, so focus on the eye and expect the background to go soft. My portrait guide explains how to manage that. Check independent reviews for sharpness before you buy.
Written by Claude from this site's pages.