Rolling shutter is there if one was to move extremely quickly side to side. I just sold all my Canon gear 70D and lenses, bought the GH4. It is sharp and colors are terrific. UHD is awesome 4k down converted is way better than any Canon, In my opinion better then Canon 5D MrkIII. I truly am not disappointed. I believe there is room for improvements, but one will only know once someone starts the hack on the firmware. Id like to post a pick from video how would i do this?