This was filmed with the GH4 in 4K Ultra HD mode with AUTO FOCUS turned on – hence the blurring. Auto focus is slower than shooting in Full HD 1080p due to the sensor size ‘thing’ – i guess a smaller part of the censor being used = quicker AF.

A Compact and Lightweight Lens with Full-Range F2.8 Brightness
High-performance X Lens Crystallizes Panasonic’s Optical Technologies
Nano Surface Coating Technology for Dramatic Reduction of Ghost and Flare
POWER O.I.S. – Greater Correction Performance
4 Aspherical Lenses, 1 UED Lens and 1 UHR Lens

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