This is not a defect. The lens can zoom all the way in (616mm) as close as 3 feet without a close up filter. In this position, the optics are in a macro focus mode. In this situation, the lens cannot hold focus for a few mm’s when zooming out. When the lens is zoomed all the way in (616mm) at 6 feet, the lens can hold focus when zooming out to full wide (28mm). In this position, the optics are not in a macro mode.
The point is, this is not a back focus problem. This is the unique ability of having a 22x wide lens on this great new camera.
Oh, and thanks for your positive comments on the camera. Our engineering team listened to many requests and implemented them on this model. And the 10-bit, full-resolution AVC-Intra 100 video quality and 22x wide zoom lens are amazing for a one-piece, sub $6,000 camera.
Thanks and have a nice day.
Steve Cooperman
Product Manager – P2 HD, POVCAM, Production Displays
Panasonic Solutions Company
https://www.panasonic.com/broadcast
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