Rasko

Oh thank you, so it's not damaged right? It's just skin fat or something that cleaning paper left?

These "scratched smears" only appear if you flashlight at lens as you can see in photos and they can be wiped away, but then they appear in other corner (I do wipe in circular motion) I am afraid that I damaged something and I would like to hear some opinions on this (Fujifilm XT-4, 16-80mm) P.S image quality looks the same after some "testing".