You asked
Is the 7artisans af 35mm f 1 8 aps c sharp wide open?
I don't have sharpness test results for this lens, so I can't tell you how crisp it is at f/1.8. I can tell you what it is: an autofocus 35mm prime for APS-C, sold in Sony E, Fujifilm X and Nikon Z mounts. On APS-C it frames like about 52mm on full frame, and f/1.8 gives depth of field close to f/2.7 there. That's a fairly shallow look, which suits portraits and everyday shooting.
For what a wide aperture does in practice, see Lenses on light and background blur. For keeping eyes sharp at f/1.8, Portraits covers it well. The full lens entry is 7Artisans AF 35mm f/1.8 APS-C.
Written by Claude from this site's pages.