The optimal test would be to put it on a tripod (so it's rock steady) and first shoot against a white wall, then against a solid black background. Then enlarge and see if you see what look like little dust specks irregularly scattered around the photo. Frankly, my spotting was so small and inconsistent that I probably wouldn't have bothered with this except the replacement was free.I will take it out right away and click away see what happens.My biggest concern is the rest of functions of the camera and the condition of minor scuffs or scratches but otherwise very Clean.Depends on who is grading the condition, some people can be over optimistic.
Yep. When I noticed to spotting, it was inconsistent--not on every or even most shots. But it would stand out when shooting in to bright light or a bright background.Charge batteries, shot continually for a few hours...