Film industry accessory manufacturer Cinoflex was recently tasked
with rigging up a new Sony a7S mirrorless camera for use on a Chevrolet
commercial. After some testing, the Cinoflex Type SA7S Camera System was
created to allow the filmmakers to attach the necessary range of
auxiliary equipment needed on a high budget commercial shoot.
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The a7S features a full-frame sensor which is much larger than the
Super 35 sized sensors found in typical high-end digital video cameras
like the Red Epic or the Arri Alexa, two of the cameras that you would
normally expect to find on such a project. The larger sensor, coupled
with the low 12.2MP pixel count, gives the a7S excellent low light
performance, a claimed 15.3 stop dynamic range and a maximum ISO setting
of 409,600.
'Our specific tests we're focused on lens fall-off and sensor
reaction. The dynamic range was also very surprising, great tonal
rendition in the shadows...Truly a WOW camera for the quality of the
sensor' said Cinoflex.
Whilst Sony designed the 4K capable a7S with video in mind, there's
always considerable ergonomic challenges to overcome when you want to
incorporate such a small camera into a professional shoot. The Type SA7S
rig creates a solid platform behind the camera that has allowed
Cinoflex to add a large Anton Bauer battery pack, as well as wireless
controls for focusing the enormous Nikon 600mm f/4 lens. Since the a7S
only features an HDMI output for the video feed, and most professional
on-set equipment uses HD-SDI, the rig is also fitted with an HDMI to
HD-SDI converter.
Cinoflex commented on its Facebook page, 'For this camera the biggest
challenge is the infrastructure... Bottom line, the sensor in this
camera is far beyond the realm of any consumer image available,
anywhere. If you embrace and correctly format a DSLR to your on set
environment… you have an incredible camera on your hands.'
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