Z8 and 180-600 lens unknown artifact in photo - possible cause?

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The first pic is an example of a plane captured while breaking the sound barrier. Lots of examples on Mr. Google.
Jets also leave vapor trails, also known as contrails, when water vapor from jet fuel combustion turns into ice crystals in the cold air at high altitudes.
I hope this helps . .
JimmyT Sends
 
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Krümelkraft said:
This leaves me kind of baffled. It looks like condensation to me. The question is, whether the condensation is in the air or on your lens or sensor.
What I don't understand is that rhombohedral shape of the halos.
Nevertheless, I think that it's nothing to worry about, since condensation eventually disappears.
Click to expand...
It was fairly warm and dry (but with some moisture in the air) and none of my other shots had this effect, so I don't think it is condensation on the sensor or lens. I do think it is condensation in the air. Not sure why the halo shape is rhombohedral (say that three times fast). Thanks for your input. Ken
 
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Not mentioned so far is this lens does not have Nikon nano coating, possibly to help keep the cost relatively low.

I found nano very effective at controlling flare with the sun close to or in the frame compared to earlier pre nano lenses when I got the 24-70 f2.8 F mount first version.

Otherwise I agree with Steve's diagnosis.
 
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