I have a spot on all images with white or (sky) blue background .
I get a spot on all images with a light or sky blue background regardless of what lens I’m using
Hi Pete. It sounds like your camera needs a sensor cleaning!
Check out these guides here:
There are multiple approaches. It seems that the sensor swab and sensor gel sticks seem to work the best. Leica uses a pentax gel sticks to remove any extra smudges before camera shipment. The pentax kit is even shown on their home page:
Thanks Anthony. That seems to be the issue. Appreciate your response.