Guess I’ll have to work on my sensor cleaning game, ‘cos this is what I see (a blue sky, with contrast racked way up, and at 2x scale) on the bottom right of my D70 sensor:
The other troublesome marks are gone, so I guess it kinda works. I used the American Recorder Digital Sensor Swab Kit from Henry’s, and the mirror lock up instructions from brams.dk.
Y’know, that pattern of splodges looks awfully like the indentations on the end of the swab …