You asked
What is the viltrox af 75mm f 1 8 evo good for?
The Viltrox AF 75mm f/1.8 EVO is a portrait lens. On APS-C bodies it frames like about 112mm on full frame, so you can stand well back and still fill the frame with a face. That distance flatters faces, and f/1.8 gives a soft background when your subject is close to the lens. For headshots and tight portraits, it's a good pick. It's made for APS-C cameras on Sony E, Fujifilm X and Nikon Z mounts, and it has autofocus but no stabilisation. It also works on several full-frame bodies in APS-C crop mode, at fewer megapixels. If you want the general case for longer portrait focal lengths, see portraits.
Written by Claude from this site's pages.