Let me get this right out of the way, the 7Artisans 35mm f2 lens isn't as good as Leica's. You're getting better sharpness, detail, and bokeh in pretty much every way and at every aperture. But the 7Artisans 35mm f2 isn't at all bad; and it can still render very gorgeous images.
Being a Chinese lens, there are surely folks out there who may doubt how capable it is. But I can assure you that unless you had other lenses side by side or were very familiar with other optics, you wouldn't really be able to tell the difference between the 7Artisans 35mm f2 and other offerings when it comes to image quality. But when it comes to the ergonomics, there are surely differences. . thephoblographer.com