Is the sensor ruined?
Is the sensor ruined? Recently I found my photos contain some black spots and later I found some sort of oily dirt on the sensor unit of my A6000. At first, I tried to wipe it gently with a lens pen but the spot just spread around. Then I applied 99% isopropyl alcohol on a q-tip to clean. In the first try it did removed the oily dirt but left a tiny spot. Then I trie...