You asked
Is the viltrox af 35mm f 1 7 air worth it?
Yes, if you want a fast standard prime on an APS-C body. On APS-C, this lens frames like about 52mm on full frame and f/1.7 gives roughly the background blur of f/2.5, which suits people, food, and low light. My guide to your first lenses recommends this kind of 33-35mm f/1.4 to f/1.8 prime for exactly those jobs.
It isn't stabilised, so you'll rely on shutter speed for handheld shots in dim rooms. It's autofocus and comes in Sony E, Fujifilm X and Nikon Z mounts. Good matches from its list of supported bodies include the Fujifilm X-T30 III, the Sony a6700 and the Nikon Z50 II. If you're wondering whether a bigger sensor would help more, read is full frame worth it?. For most hobby shooting, I'd spend on this lens before the body.
Written by Claude from this site's pages.