LensTip.com

Lens review

Nikon Nikkor Z 24-70 mm f/2.8 S

23 September 2020
Maciej Lata││o

7. Coma, astigmatism and bokeh

When it comes to coma correction we've got rather good news. Firstly, in the area limited by the size of the APS-C/DX sensor that off-axis aberration remains practically invisible. Secondly, in the middle of the range and at the longest focal length you won't see any problems even in the corners of full frame. Some chances to notice coma you get in the corners of full frame but only at the shortest focal length and the level of that aberration is not especially distinct.

Center, 24ámm, f/2.8 Corner APS-C, 24ámm, f/2.8 Corner FF, 24ámm, f/2.8
Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh
Center, 45ámm, f/2.8 Corner APS-C, 45ámm, f/2.8 Corner FF, 45ámm, f/2.8
Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh
Center, 70ámm, f/2.8 Corner APS-C, 70ámm, f/2.8 Corner FF, 70ámm, f/2.8
Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh


Astigmatism, understood as an average difference between vertical and horizontal MTF50 function values amounted to 6.2%. It's a moderate level. We also didn't notice any significant differences between particular focal lengths even though officially the lowest result we got at 70 mm.


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Defocused circles of light look very nice - they don't feature any distinct traces of onion ring bokeh or a significantly brighter rim. Mechanical vignetting is the bother, though, as it is very distinct by f/2.8, noticeable by f/4.0 and still slightly accented by f/5.6.

Center, 70ámm, f/2.8 Corner APS-C, 70ámm, f/2.8 Corner FF, 70ámm, f/2.8
Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh
Center, 70ámm, f/4.0 Corner APS-C, 70ámm, f/4.0 Corner FF, 70ámm, f/4.0
Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh
Center, 70ámm, f/5.6 Corner APS-C, 70ámm, f/5.6 Corner FF, 70ámm, f/5.6
Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh Nikon Nikkor Z 24-70 mm f/2.8 S - Coma, astigmatism and bokeh