5DII sensor stain?
Bought a refurb 5DII in March. I've continually noticed three little dots with halos showing up at f/22 since receiving it. I don't shoot with that f-stop often, but when I do, it's a pain to have to remove them every time. Also, they seem pretty fixed in place and don't appear as normal dust particles. (The usual dust I see doesn't have odd halos).
I have tried running the camera's cleaning cycle and hitting the sensor with a rocket blower. Kind of scared to delve further.
Legit dust or defect?
Probably not a big deal but I'd like to know if its a legit defect as the warranty runs out soon. Otherwise, I'm loving the 5DII. Killer upgrade from my old 20D.