rando wrote:
I have returned my Tamron 16-300 lens and Nikon 5100 body to supposedly synch the auto focus and match camera and lens perfectly. Each time after considerable time and shipping costs, my lens/camera auto focus was worse. Now they want me to return both for a third time plus send sample pictures that areout of focus. My question is when is it time for me to reasonably request a replacement lens?
Just went through a similar situation. My Tamron 16-300 wouldn't autofocus at longer distances with both my Nikon D500 and D300. Focus on something a couple of hundred yards out and fuzzy, distance scale would read between 8 and 20 feet (Tamron's response was "the distance scale is not calibrated," yea but that's a bit off. Into them twice, thought it was better but as you can see from a recent image taken in Honduras, not so (AF-C, Single center focus, back button). No issues with any other lens' on the D500. Returned it and replaced with a Nikon 18-300 3.5-5.6 ... refurb from Nikon ... yes, I know, only 90 day warranty instead of 6 years! No adjustments done to attached image.