dougjgreen
Mu-43 All-Pro
How many of these $1000 lenses that have been shipping for less than 3 months do people think are actually out there in the field? I'd be stunned if it were more than a few thousand units worldwide at this point. And yet, we have already gotten several reports of failures by the same failure mechanism. To claim that there is not SOME type of QA issue with this lens at this point is whistling past the graveyard. We don't know if it's a design issue, or if it's a broad-based manufacturing issue, or if it's a defect with a single manufacturing lot of these lenses - but I can absolutely guarantee that there is SOME issue causing this, well beyond that of mere random coincidence. Even three similar mount failures in the field at this early point in the life of this lens would be at least a couple of sigma outside the predicted failure rate at the lens mount for a brand new high-end product. It's appropriate to say that there isn't any reason to blame the fact that the lens mount is plastic, but it is most assuredly NOT appropriate to say that no bona-fide QA issue exists at this point. There is enough failure data to say with extreme confidence that an actual defect does exist - whether it is a design defect, or a manufacturing defect is unknown, and if it is a manufacturing defect - we don't know if it's a systemic problem or one bad manufacturing lot. But we can for sure know that an actual issue exists by three in-field failures of brand new product that has only shipped a few thousand units.