Anybody used a7s for serious video shooting?

[Aanything]

I'm about to buy a "video" camera that I'll use for work. Since I (and my clients) am quite pleased with the results I got with my manual lenses on different cameras, the idea would be to buy something that allows me to do that. I've been using a 5dIII most of the time, recently, and it is more than enough for the kind of work I need to do, but being a long time sony aficionado and strongly attracted by the compactness and the possibility to use rf lenses on it - not to mention the low light capabilities and the possibility to have 4K output- I am trying to pick up as many opinions as possible about this camera's performance.
So far, it has been a chorus of praises but I suspect some were not completely unbiased.
Has anybody here tried the a7s for "serious" video shooting and care to share impressions/opinions?

[philslizzy]

For serious Video making, take a look at the Canon Eos C500. 4k video and uses all the EOS lenses plus whatever you can adapt to it. A seriously good camera. The one I'd buy if I were in the market.

Why use a still camera? For video use a video camera. No over heating, no limited length clips, better file format save etc...
look here: http://canonxf.blogspot.co.uk/2012/04/canon-eos-c500-4k-camcorder-launches.html

[Aanything]

I'd love the c500, I've been using a c300 every now and then recently and I'm absolutely sure it's better than any dslr i've tried, but I have to consider the price too: the c500 launch price should be under $30.000, the a7s is under $3.000.

[Pontus]

As you probably know, with the A7S you need an external recorder for 4K video.

[Aanything]

[iangreenhalgh1]

Samsung NX1 does 4K, it is reported to have the best APS-C sized sensor yet seen.

[AlexWicks]

...and H.265, which has an awful workflow.

[Attila]

How about Black Magic ?
https://www.blackmagicdesign.com/products/cinemacameras

[mmelvis]

[DoryBreaux]

It depends. One of my friends uses it for remote work (of which he does a lot) because it is so small and light, even with a Wooden Camera cage and Shogun recorder. I bought it for sLog2 and the low light sensitivity because I shoot a lot of wildlife and astro timelapse.

If your work will benefit from a true superflat image (sorry, 3rd party picture profiles for Canon dslrs never cut it for me, or even came close), usable high ISO, the ability to use almost any lens ever made, and the compact form factor, I would say jump on a used one OR wait till the II comes out in October. I bought mine with the full intention of adding a real digital cinema camera in a year or so, like an FS5/7, BMD Ursa Mini or Kinefinity.

If you already have a good set of EF lenses, I would say look into the BMD cameras because they produce an INSANELY beautiful image (especially the new 4.6K sensor) and have a native EF mount. Yes the Ursa is big and uses CFast2 media, but there are workarounds (CBox, lets you use SSD media), and the Ursa Mini packs many of the features of the Ursa into a much more compact body.

My personal on the Canon C series; I havent used them much, but did a two week shoot as an AC/second camera op where about half the camera crews used them at one point or another (myself and the cameraman I was ACing used a DRAGON, GH4 and 6D for the most part) and the few times I shot with one, I was pretty underwhelmed. For someone who is used to a DSLR (especially Canon), I felt like it should feel more familiar. But I also passionately hate shooting with a DSLR (to bring this full circle; this is why I went with something I knew I could easily move to a second camera/timelapse specific camera soon). Like I said, thats my personal opinion.