have been getting really back into photography lately using my old Pen-1 Micro Camera but I have seen this little pinkish red dot appearing on every other photo I take and have no idea what it is or how it came about, I want to know if anyone has got any idea where or more importantly why this is happening?

also one thing to note is I didn't mess around with any of the configurations on the camera just the ISO, Aperture and Shutter Speed in later photos.

also another thing to note is there's now three of these little pinkish red dots on the photos.