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Nikon Nikkor Z 50mm f/1.2 S Review - Performance

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Nikon Nikkor Z 50mm f/1.2 S Performance

Sharpness is remarkable. At the centre, it is outstanding from f/1.2 through to f/8, and excellent at f/11 and f/16. The edges are excellent from f/1.2 to f/2, outstanding from f/2.8 to f/8, excellent at f/11 and very good at f/16.


 

Nikon Z 50mm f/1.2 S MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Nikon Z7 using Imatest. Want to know more about how we review lenses?


CA (Chromatic Aberration) is measured with any in-camera corrections switched off, as far as we can know anyway, and the end result is almost no CA at all. Further correction in software might be possible, but it is very doubtful that it would ever be needed.

 

Nikon Z 50mm f/1.2 S Chromatic Aberration Charts

How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Nikon Z7 using Imatest.

 

Distortion measures +0.16% pincushion, virtually rectilinear, and again a challenge to many macro lenses, just as the 58mm f/0.95 Noct is. Architectural shots will be reproduced with straight lines, even at the edges of the frame.

Bokeh is really smooth, bright highlights sometimes appearing somewhat elongated at the edges of the image, but always smooth in gradation.

Flare resistance is excellent and no flare is generally visible, even under quite demanding situations.

Vignetting is obvious wide open, but stopping down soon sees it brought under control to quite reasonable levels.

Aperture Vignetting
f/1.2 -2.4 stops
f/1.4 -2
f/2 -1
f/2.8 -0.8
f/4 -0.8
f/5.6 -0.8
f/8 -0.8
f/11 -0.8
f/16 -0.7

 

It is also worth mentioning that with an f/1.2 lens accurate focus can be quite a challenge. The AF of this lens is extremely precise in this respect and nails the point of focus every time. A superb performance all round.

Nikon Z 50mm f/1.2 S Sample Photos

 

Nikon Z 50mm f/1.2 S Aperture range

You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.


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Comments


22 Dec 2020 9:49AM
How can a 50 mm be so long? It seems Nikon is using F mount optical scheme adding just room and some optics to correct for mirrorless shorter distance.
UKMike2013 8 21 United Kingdom
22 Dec 2020 6:05PM
An outstanding lens no doubt - but an absurd size! Can't see many carrying anything like that for a 50mm.
Lance_B 7 3 Australia
22 Dec 2020 9:57PM

Quote:How can a 50 mm be so long? It seems Nikon is using F mount optical scheme adding just room and some optics to correct for mirrorless shorter distance.


Then you don't understand lens design. The diameter of the flange as awell as the flange to sensor distance can make a large difference in the end performance. If you look at the design of the lens here:
https://imaging.nikon.com/lineup/lens/z-mount/z_50mmf12s/spec.htm
you can see that the rear element goes right to the back of the lens as close as possible to the sensor without protruding past the mount. Not only that, but the width of the last element is almost as wide as the mount throat which would not be possible with the old F mount. So, the new mount has allowed Nikon to design the lens to take full advantage of the extra room this new mount allows.

An AF 50mm f1.2 was NOT possible with the F mount as there was not enough room for the electrical contacts as well as the wider throat required for wider rear element. Added to that, to keep CA and other distortions at bay, this required a wider mount and closer rear element which has been achieved with the new mount. Edge to edge sharpness, wide open sharpness, virtually non existent CA, low distortion, excellent bokeh and decent bokeh balls would be basically un-achievable in the old F mount. Even if they could have achieved some of these benefits, it would have been even larger and heavier and much more expensive than this Z mount design due to the use of much more glass, and more importantly more exotic glass, to correct for aberrations even if they could have been corrected in an F mount design.

This is obviously not a lens for the average punter. This is a lens for specialist use for pros and advanced amateurs that want to get wide open sharpness and shallow DOF for that special look. I see it as another benchmark lens for Nikon. If you want a 50mm lens that does mostly what the 50 f1.2S lens can do but only a half stop slower, look at the sensatioonal 50mm f1.8S that has been compared to some of the best exotics out there. Small, light and a relative bargain.

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