Strange artifacts on XT-3 raw files.

[Rlginer]

Hi, I've been noticing strange artifacts on XT-3 raw files. They appear as square shaped dark spots and ugly grain. The grain can be remedied with noise reduction but the spots are still there. It's very inconsistent and there doesn't seem to be a pattern. Check the attached images, any help in identifying the problem would be appreciated.




The dark spots that appear all over the image when enlarged.




At normal viewing on screen, thing look ok, until enlarged, you don't see the artifacts.

 

[Truman Prevatt]

It is very difficult to help you with the limited data given. Please describe your settings, how these images were taken, processed raw or out of camera jpegs and if jpegs what settings.

 

[Greybeard2023]

It is very difficult to help you with the limited data given. Please describe your settings, how these images were taken, processed raw or out of camera jpegs and if jpegs what settings.

And maybe share an original unprocessed file

Also try taking an image of a plain wall or blue sky at something like f/16 which will show dust or marks on the sensor

 

[Phil BH]

These images seem to be a picture of a screen, taken by a cell phone. Output the actually image from the computer, or upload the actual RAW image. You cannot discern anything from these images.

Phil

 

[sir_c]

Like the others said, difficult to judge with the info provided so far. Apart from the sensor, you sure the rear lens element is clean? Or do you see the same spots after changing/cleaning lenses?