The long-awaited latest Lumix "G" flagship camera breaks new ground: It can shoot 4K video and save it directly to an SD card. So this week we invited video guru Dave Dugdale to join Doug and Frederick and give us his two cents. Doug put the GH4 through some very different paces. He wanted to see what would happen if he shot 4K video specifically with the goal of extracting still images. Check out how well the GH4 did in both Doug's and Dave's tests.

Test images Frederick made in Paris using the GH4: