tsaieh
Senior Member
Before you bring the Sigma down to the SC you might want to try fully charging the original battery and popping it into the camera with the 50mm just to be absolutely sure the issue lies with the sigma lens and not the LP-E6. Problem is you are using 3rd party battery now to test and the reading may not be accurate.
Orginal and 3rd party battery both have the same issue. Not battery issue.