Well, I learned a hard lesson today … make sure your optics are clean before taking pictures.
I spent two days taking a huge number of pictures … and, after transferring them to my computer, I found that there was a water stain on my UV filter … and that stain showed up on EVERY shot.
A few of the shots are recoverable … as the stain is in a contrast area … but the majority of the really good shots are a total loss.
[tags]Lens, Camera, Photography, Optics[/tags]