LensTip.com

Lens review

Nikon Nikkor Z 50 mm f/1.2 S

1 June 2021
Maciej Latałło

7. Coma, astigmatism and bokeh

In case of the Nikkor 1.2/50 the coma situation is quite interesting. At the maximum relative aperture the diode gets small 'wings' already in the corner of the APS-C/DX sensor but these wings, and especially their length, are, in fact, a result of higher degree aberrations, for example the sagittal component of diagonal spherical aberration. That aberration is even more pronounced in the corner of full frame. Fortunately stopping down the aperture by 1 EV decreases its influence in a noticeable manner.

Similar 'wings' were visible also in the test of the Sony 1.2/50 GM but in its case they could be noticed only in the corner of full frame. In the corners of the smaller sensor diode images remained point-like even at the maximum relative aperture so we think that in this category the Sony fared a tad better.

Center, f/1.2 Corner APS-C, f/1.2 Corner FF, f/1.2
Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh
Center, f/1.8 Corner APS-C, f/1.8 Corner FF, f/1.8
Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh


Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


Astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, amounted to 15.1%. It is a medium value, a bit lower than the astigmatism level of the Sony lens.

The appearance of out-of-focus areas seem to be very pleasing to the eye but, as we've already mentioned, it's a matter of taste. Light spread in the circles is even and, despite using aspherical elements, onion-ring bokeh is just slightly visible – you can notice it only when you take a closer look. A brighter rim that appears on a more significant stopping down is not especially intensive. Mechanical vignetting is distinct only by f/1.2; by f/1.8 it is already low and by f/2.5 it disappears completely.

Center, f/1.2 Corner APS-C, f/1.2 Corner FF, f/1.2
Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh
Center, f/1.8 Corner APS-C, f/1.8 Corner FF, f/1.8
Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh
Center, f/2.5 Corner APS-C, f/2.5 Corner FF, f/2.5
Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh Nikon Nikkor Z 50 mm f/1.2 S - Coma, astigmatism and bokeh