I know I said I didn't care for the DSLR form factor. Mainly
because DSLR's don't normally have all the features of a dedicated video
camcorder, and because you have to purchase all the extra DSLR "rig"
stuff. Like a matte box, and a whole rail system with a cage, and on and on.
Well, I got tired of waiting for Sony to release
an interchangeable lens 4K video form-factor camcorder,
that wouldn't break the bank. I'm sure there's one in the
works, but I can't wait, besides I needed a new still camera anyway.
I purchased the Full-Frame Sony a7s camera to replace my
NEX-VG900, and to get started shooting 4K video. I don't have an Atomos
Shogun recorder yet but in the meantime I shot some 1080p footage using the
XAVC-S and S-Log2 profile.
This is a short video shot using the Picture Profile 7 which is S-Log2. I didn't have any luck using FCPX built in Log Processing, under the Info tab in the Inspector window. I graded using FCPX's built-in Color Correction. Sorry for the shaky video.
You have to overexpose slightly or else you get noise. The
lowest ISO for Profile 7 is 3200. If you are going to use this, experiment with
it first and shoot plenty test footage. You may need an ND filter if you want
to open your iris and shoot narrow depth of field. You can also increase
shutter speed to something outrageous, you just won't get the 24p
movie blur, when you pan.
The S-Log2 stuff looks flat and low contrast out of the
camera and it must be graded, unless you like low contrast flat video. I
guess the idea is that you have more range for grading.
I believe this is 8bit S-Log2. I wonder if I can
shoot 4k and down-convert to 1080p 10bit S-log2? As soon as I get my
Atomos Shogun I'll post more footage - 4K footage, and I'll see if 10bit 1080P is
possible from 4K footage.
Below you can appreciate this small camera surrounded by stuff just to make it more video friendly. I'm still missing the Shogun from Atomos - I'll review it soon - and more on shooting 4K on the a7s.
 |
| a7s with all the fixings - Atomos Shogun coming soon |
I would like to be clear here, I have NOT been given any of these products in exchange for positive reviews. These products have all been purchased and payed for by me with no help from these manufacturers.
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