Dendrobatid From United Kingdom, joined Nov 2004, 1668 posts, RR: 61
Reply 1, posted (8 years 6 months 3 weeks 2 days 5 hours ago) and read 2728 times:
AIRLINERS.NET CREW HEAD SCREENER
I find it very rare to see a dust spot on anything other than very blank areas, with our photography, generally the sky. Because of this I use the magic wand, selct the sky and just equalise that. If you do that you can't miss the dust spot, to the left of the e on the fin at about 10 o'clock above the smaller of the two chimneys.
Once you know where to look, you can see it without equalising.