When we moved to France I brought a number of old manual focus Nikon lenses.
One of the lenses in the batch of Fun Things was a 24mm f/2 Nikon Nikkor Ai. I never used it and sold it. The reason is I didn't like it. It was soft wide open and I wasn't convinced that it could match the image quality of the inexpensive AF lenses I used at the time.
After watching a Joel Grimes portrait lighting video I saw that he used a 24mm lens to great effect. The idea of using an old manual focus lens for portraiture was suddenly attractive. I felt the desire to try another 24mm full frame lens.
I have two autofocus wide angle lenses that I could use but don't like using AF lenses with their manual focus function "focus by wire." Justification and rationalizing comes easy to me.
Scanning le bon coin one day I stumbled on a 24mm f/2.8 Nikkor. The price seemed correct when compared against eBay completed auctions. After firing off an email to the lens' seller we made arrangements to meet so I could view the object en vente.
The Nikon Nikkor 24mm f/2.8 AiS is a pretty little thing. It's relatively small and light for a lens that comes mounted in real metal (as opposed to plastic that tends to be used in current AF optical implementations).
The f/2.8 version of the Nikon 24mm lens is most definitely sharper and more contrasty in the center than the f/2 I sold. But, and this is a huge "but", the corner performance suffers to the extent that it is unusable on my APS-C Sony mirrorless cameras when mated to a Lens Turbo II focal reducer. Stopped down to f/8 and f/11 the lens never cleans up in the corners.
Mounting the 24mm Nikkor on a straight-thru adapter turns the effective focal length into a 35mm f/2.8 lens on my tiny Sony APS-C mirrorless. This isn't exactly what I intended. If I wanted a 35mm lens, I'd prefer to have my old Nikkor 35mm f/2 back. I foolishly sold the 35mm when I went through a fit of "downsizing" my Collection of Photographic Tools. Though, I suppose, I could wait until full frame Sony mirrorless prices descend from un-obtainable to somewhat affordable and use the 24mm lens on that. Someday. Maybe.
I feel "stuck." Again. This is a lens I really want to love. Yet, here is another 24mm Nikkor that, for one reason or another, I can't use as I intended.