Nikon Nikkor AF-S DX 16-85 mm f/3.5-5.6G ED VR
7. Coma and astigmatism
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Unfortunately coma is not a category the Nikkor 16-85 mm can be proud of. Its influence on the circular image of the diode is the most pronounced at the shortest focal lengths but even at the longer ones we can perceive it as well.
Astigmatism won’t cause us any serious problems, though. Its value, understood as an average difference between horizontal and vertical MTF50 function values amounts to 4.7% which can be considered as low.
