I think the low light capabilities of the GH4 have been a bit misunderstood by many. Extreme low light with the A7s is a very cool artistic tool, but in no way is the GH4 unusable in low light. Just don't try to see in the dark with the GH4 and let shadows be shadows. To that extent, it is a low light camera if treated well. Our latest short travel film has bunches of low light shots: A Postcard from Jamaica