Raffaele, la foto è quello che è ma funzionale a farti vedere le prestazioni di un ottica che tu non useresti mai in queste condizioni e cioè a tutta apertura ed a una distanza di messa a fuoco piuttosto ravvicinata.
"The high-speed 28 Nikkor is unusual in having its close-range correction (CRC) executed with the front elements, not with the rear as the case is with other wide-angles. It offers outstandingly sharp images and these are produced at all aperture settings from f/2 to f/8 with just a trace of corner softness at the wider settings. Field curvature is modest in terms of wide-angle lenses. Peak performance occurs between f/4 and f/5.6. When stopped down beyond f/11, sharpness suffers however. This lens is unusually resistant to flare and ghosting and eminently suitable for shooting directly into the sun. Never catching the buyers' fancy, this is an uncommon lens which is indicative of the perils of free enterprise.
IR performance: With the D70, a quite strong hot-spot is observed, but on the S3Pro UVIR, this issue evidently disappears since I haven't been able to trigger any such spot even at f/22.
I recently managed to get my 28/2 outfitted with a matrix CPU chip, which made it compatible to all my newer Nikons and the Fuji S3 Pro UVIR as well. Recommend as a small and inexpensive alternative to the 28/1.4.
On a digital camera, some colour fringing occasionally can be observed. D2X shows this quite clearly. Hence I rated the 28/2 a little lower for this camera, but of course if you are not bothered with CA, don't listen to me here. If troublesome, the CA issue can be mitigated by digital post-processing. "
Raffaele vedrai che riuscirai a trovarne un altro, fra un po' tutti utilizzeranno gli zoom plasticoni...
Scherzi a parte, mentre ci sono ottiche anche particolari che ciclicamente si trovano, di 28/2 è da tempo che non ne vedo, probabilmente ne hanno prodotti pochi, è più facile trovare il 24/2, stranamente.