Another shorebird from the Pacific Northwest coast taken at the end of April 2019. This is an image taken with the D 500 and 500 mm PF in which on close examination of the background, one can see the reticular pattern of the sensor. The same pattern is visible in the raw file but not as much. The pattern becomes much more visible with noise reduction applied to the background. No blurring of the background other than that from noise reduction with Nik strong noise filter. Has anybody seen this before with a D 500 or other cameras and are there any solutions? I've seen this before in other images and I'm unable to find any references on the web. thanks for any help...

Iso-800, 500 mm PF, F6 .3, 3200th, D 500, handheld, 60% of full frame, DxO photo lab 2, Adobe camera raw, TK sharpening action at 10%, Nik strong noise filter on background only, overcast and somewhat foggy.

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