The GH4 has jumped ahead of the competitors with it's amazing capability to deliver 4k at a $1,697. price point (body only). We applaud that achievement. We wanted to know how it did in the 2K world, where we'll be filming until the 4K world becomes the mainstream medium.
In the 2K world, the dual-sensor technology on Canon's 7D (priced at $1,070. body only and $1,450 with a 18 - 135mm lens) empowers you to focus as fast as you can touch the screen (see our upcoming review, "Focus Tests of the GH4 vs the 70D".) The 70D trounces just about anyone unless you've got a Hollywood focus puller. But how does the 70D do against the GH4 in low light (High ISO) situations? Here's our brief test. We put a 5D Mark3 in the test just to give a reference point. See how the grain structure develops at 3200 and 6400 ISO for yourself.