You asked
Best wide angle lens for nikon f?
I don't have a Nikon F lens catalogue on the site yet, so I can't recommend a wide angle lens for that mount with confidence. The lenses I cover here are listed for other systems. The Sony E 16mm f/2.8 is for Sony APS-C bodies, so it won't fit a Nikon F camera. The two Laowa 15mm lenses are ultra-wide macros for full frame cameras, but the pages don't say which mounts they come in, so check the mount before you buy.
For a sensible starting point on how wide the lens opens and what that does for low light and background blur, see Lenses. If you're still choosing a body, Your first camera explains what a camera does better than a phone.
Written by Claude from this site's pages.