Originally posted by cem.kumuk I also figured out a stain on my sensor but remain in dilemma whether to return the camera or continue using as it is. Here are a sample shot I made with 1/180 shutter speed @ F/8
When you look at the whoel frame, IT's hard to explore the stain beside the minarets on the left side of Hagia Sophia. Then I made 100% crop where the stain is clearly visible but such things can easyly be retouched with PS healing brush. Do you really think it is worth to return the camera for such a thing. Some people says second hand selling price will drop. Why... If the person whom will buy also knows how to use PS healing brush, why it should drop because of this. In my case I live in IStanbul but I bought the camera from Germany. Now do you guys really recommend me to return this camera?
Have you tried dust removal? In-camera and/or blower? Does dust-mapping recognize it? Obvious first steps to take before considering warranty return.
It's hard to tell from the posted images, but that does not look like the typical stain - no halo effect in the spot. So, my first guess is dirt. It needs a simple cleaning, not replacement.
(then again, if you look real hard - there could be a halo there. But - try cleaning first)