A7s and Shogun

Record amazing 4K at 30fps


As a Panasonic Lumix GH4 owner, I could not remain impassive to the possibilities offered by the 4K resolution. However the Lumix sensor size, makes it impractical in indoor environments, where light is a challenge. So I began to desire the same resolution also on the queen of Low-light cameras: Sony A7s. This mirrorless is unique for several reasons: full frame on a low megapixel density sensor in a small, compact body.  This results in a native ISO of 3200. It offer internal recording with a good XAVC codec at 50Mbps, delivering resolutions up to 1080p60, but it’s thanks to the external recorder Atomos Shogun that the mirrorless reaches the top of 4K world. This monitor / recorder permits acquisition of up to 3840×2160 @ 30p, via HDMI or SDI, recording in Adobe ProRes (LT / 422 / HQ) and Avid DnXHR or uncompressed CinemaDNG (only Sony FS7 – FS700). This combination, followed by a good selection of Zeiss lens, will give you stunning and amazing shots. I made a first test on a beautiful sunny day in Mondovi, Italy. Here you can see the result:

Samples has been recorded in “movie” picture profile, recording to Shogun in ProRes LT @ 2160p29,97, editing in post with Osiris Vision 6 LUT.
Sorry for shaky shots, recorded hand holden. I preferred to not stabilize in post since I want to show the maximum original resolution.
What really impressed me is the qualità of eery single frame; pretty usable a normal 8MP photo! This one is extrapolated and not retouched from one clip (click for full resolution)


And here some video samples not edited. You can better understand the amazing dynamic range that this sensor deliver in a sunny day.
Test 1: PP7 (S-LOG2) : Flat LOG clip, for maximum dynamic range
Test 2: PP1 (Movie) : The amazing bokeh that new lens offer: Sony / Zeiss Distagon FE 35mm f 1.4
Test 3: PP1 (Movie) : not graded clip used in video sample.
I’ll publish more tests with lens used in this review:
Sony / Zeiss Distagon FE 35mm f 1.4
Sony / Zeiss 16-35mm f4.0 OSS
Samyang 85mm T1.5 CINE
Zeiss Planar T* 50mm f1.4