You asked
Is the nikon af s 85mm f 1 8g worth it?
Yes, I think it's worth it if you shoot people on a full-frame Nikon. The 85mm f/1.8 is the classic portrait lens: flattering perspective, soft backgrounds, and a comfortable distance from your subject. The portraits guide explains why longer lenses flatter faces.
On full frame, these bodies pair well with it:
It also fits APS-C bodies such as the Nikon D7500, but there it frames like about 128mm, which is tight for most portraits. I'd only use it that way for headshots taken from a distance. If you're unsure whether full frame is worth the cost, read sensor sizes first.
Written by Claude from this site's pages.