On a recent shoot for HD Net, I photographed the correspondent in a well lit environment (set). Using the 1/2-in version of the Sony XD Cam HD (HD Net's camera with basic lens that comes with the package)

Back Focus, Check
Focus on the scene, Check

When watching playback on a large screen monitor, cannot recall type & manufacturer, everything looked sharp until the correspondent moved his head and then the "catch lights" in the eyes appeared slightly soft.

Total bafflement!

Then I started to think about video compression and the GOP (not politics) and perhaps the predictive nature of GOP was not updating quickly enough and creating an artifact that was manifesting itself as soft focus on the only part of the picture that was moving.

Any thoughts or comments?

Gregory Andracke, NYC