You asked
Is the 7artisans 14mm f 2 8 good on aps c?
Yes, it works well on APS-C, with one caveat. The 7Artisans 14mm f/2.8 is a full-frame lens, so on an APS-C body it frames like a 21mm on Sony E, Nikon Z or L-Mount, and like a 22mm on Canon RF. That's a useful wide view for landscapes, interiors and street, and f/2.8 gives about the depth of field of f/4.2 there.
The caveat is that it's manual focus and not stabilised, so you'll focus by eye. Wide lenses forgive that more than telephotos do.
I'd pair it with one of these:
If you want a 14mm made for APS-C from the start, look at the [Pentax smc DA 14mm f/2.8 ED [IF]](/gear/lenses/pentax-smc-da-14mm-f-2-8-ed-if/). For how crop factor changes depth of field, see Sensor sizes.
Written by Claude from this site's pages.