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Lens review

2012-03-10
 

Nikon Nikkor AF-S 85 mm f/1.8G

7. Coma, astigmatism and bokeh

The coma is corrected very well - in the corner of the APS-C/DX sensor its influence on the image of a diode is imperceptible. In the full frame corner the diode is slightly distorted but the effect is insignificant and, what’s interesting, less pronounced than in the case of a more expensive AF-S 85 mm f/1.4G.

Nikon Nikkor AF-S 85 mm f/1.8G - Coma, astigmatism and bokeh

It would be difficult to have any reservations concerning the astigmatism correction. An average difference between horizontal and vertical MTF50 function values amounted to just 2.9%. It is a result, within margin of error, exactly the same as in the case of the tested lens’s faster brother.

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A defocused images of light points from this lens are very nice, featuring even light distribution. What’s more, after stopping down the lens by 1-2 EV the images in the frame centre don’t differ from those reached in the corners of both the small and big detector. The lens definitely deserves to be praised here.

Nikon Nikkor AF-S 85 mm f/1.8G - Coma, astigmatism and bokeh

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