So going by the intended use...with today's bodies, wouldn't anything under f2.8 be classified as a 'noct' lens?!
It was designed at time of low ISO been offered by films. fast ISO for color film was 400 at that time. there is just no need for such lens any more. That is why the new lens is not a noct, because it is not designed just for its low light ability. it is also intended as a good general use lens that you don't have to step down to get good results.
the most of advanced optical design technologies long cultivated by Nikon to achieve high reproduction capability of point light sources even at the maximum aperture
The original NOCT lens was differentiated from the conventional ~50mm focal length lenses because of the way it could accurately render light sources, even at f/1.2 - i.e. the coma performance was significantly better. NOCT designation basically equalled "specialist lens with improved coma performance" in lens lingo, as a result of this.
Whilst Nikon may not have explicitly called this lens a NOCT lens, you can see from that part of the press release why places like DPreview say that Nikon are invoking the "spirit of NOCT" with this lens - especially the specific reference to point light sources.
I understand that, that's why I dont understand people are calling this a noct lens...

MartynK said:No aperture ring at this price point? That sort of rules it out for me, apart from the minor factor of being way beyond my means!
According to DPReview, the new Zeiss has an aperture ring in Nikon fit, but not for Canon.
Aperture ring......at that price the wife would be looking for the diamond ring ;-)

No aperture ring at this price point? That sort of rules it out for me, apart from the minor factor of being way beyond my means!
According to DPReview, the new Zeiss has an aperture ring in Nikon fit, but not for Canon.
The G lenses haven't had aperture rings for a while now. I don't think you really need them.
Yeah I agree I like them too, my Zeiss 21 and Zeiss 100 f/2 have them. I think Nikon's rationale is we don't need them as we use the camera now to set aperture and it saves them money and complexity if it breaks. If it was up to me I'd ditch the plastic fantastic and bring back the aperture ring and metal build quality.
Yeah I agree I like them too, my Zeiss 21 and Zeiss 100 f/2 have them. I think Nikon's rationale is we don't need them as we use the camera now to set aperture and it saves them money and complexity if it breaks. If it was up to me I'd ditch the plastic fantastic and bring back the aperture ring and metal build quality.
They've attempted to make a diffraction limited lens (perfectly sharp wide open). Such lenses are always very expensive (i.e. $3-4K Rodenstock lenses).
To get the full resolution from a D800 you need a lens that is diffraction limited @ f/5.6 (doesn't get sharper stopped down further and is of sufficient sharpness) and you need to use it at f/5.6. For the D7100 it's more like f/4. And it will probably get worse with the next super high MP releases.
(For FX you only get ~ 30MP @f/8 and 16MP @f/11 for the green wavelength (60% 0f an image) and the numbers are lower for an APS/DX sensor.)
These kinds of lenses make as much sense as super high MP sensors do... If you have one you kind of need the other.
Of course there may be other benefits to a lens that's critically sharp @ f/1.4, but I don't really see any for most uses...
This is not true, or rather it is not based on a full understanding of what constitutes sharpness.
It is not capped by pixel-pitch, only by optical diffraction.
On Zeiss the aperture rings is needed because it is a manual focus lens. There is no chips inside the lens to talk with the camera. You have to use full manual mode as well.
The Zeiss ZF.2 have an aperture ring, and they are chipped, aperture is set from the command dial.