You asked
Is the viltrox af 75mm f 1 8 evo worth it?
Yes, if you want portrait-length reach on an APS-C body. The Viltrox 75mm f/1.8 frames like about 112mm on full frame, and f/1.8 gives roughly the depth of field of f/2.7 there, so you get real subject separation. It's autofocus but not stabilised, so keep your shutter speed up.
It's made for Sony E, Fujifilm X and Nikon Z mounts. A Fujifilm X-T30 II or a Nikon Z50 II makes a sensible, light pairing. On a full-frame Sony or Nikon Z body it still works in APS-C crop mode, just at fewer megapixels.
Before you buy, check the third-party lens notes to confirm your body supports the autofocus features you want. For how focal length shapes portraits, see the lenses section on Portraits.
Written by Claude from this site's pages.