Here at Hawaii Camera we’ve been really stoked about the performance of the new Sony A7s. It’s 35mm full-frame sensor provides incredible low light performance, great lens support with various E-mount adapters, decent overcrank, S-Log and the ability to record 4K. A number of local productions have successfully used this camera to produce TV commercials, music videos and even Sony Japan came to Hawaii to record an A7s Promo video.
Even though we have the Convergent Design Odyssey7Q and AJA Ki Pro Quad in stock, and the Atomos Shogun on order, we have not been able to record the 4K HDMI output. The original Odyssey7Q does not support 4K recording over HDMI and as of this writing we have not been able to get the Blackmagic 4K HDMI to SDI converter to work properly with the Sony A7s or the FS7, even with the latest firmware.
This week we received the new Convergent Design Odyssey7Q Plus, which adds a 4K HDMI input to an already excellent monitor/recorder that the Convergent Design Odyssey7Q is. With the Convergent Design Odyssey7Q Plus and the Sony A7s we should have the ability to record ProRes 422 HQ at 24, 25 or 30 fps in UHD (3840×2160) resolution. So obviously we were eager to put aside our paperwork to see if we could finally record the glorious 4K output of the Sony A7s!
We’re pleased to announce that that you are able to record 4K ProRes 422 HQ with the Sony A7s and the Convergent Design Odyssey7Q Plus. You do not need the optional Sony RAW license as we’re not dealing with a RAW signal. A single SSD will do just fine. Two SSDs will give you a longer recording time.
Odyssey7Q Plus + Sony A7s = ProRes 422 HQ 30P Recording Times
256GB Media 33 minutes
512GB Media 66 minutes
1TB Media 132 minutes
The equipment you’ll need are:
- Sony A7s camera, battery and any lens
- Convergent Design Odyssey7Q Plus Monitor/Recorder, power source
- Odyssey7Q Media, at least 256GB.
- HDMI Micro to HDMI Mini cable that supports 4K. We had to use an HDMI to HDMI Mini cable with an HDMI to HDMI Micro adapter.
- Movcam A7s Camera Rig and Noga Arm to mount it all together (optional).
Setup the Convergent Design Odyssey7Q Plus.
Setup the Sony A7s Camera.
Note: The HDMI 4K Output will only illuminate after the camera detects a 4K capable device. If your HDMI cables, adapters or anything in the signal path is not compatible or connected correctly, you won’t be able to get past this critical step.
Thanks for checking out our blog post. We hope that it helps answer some questions you might have had in how to set up the Sony A7s to record 4K externally. If you’re ever in Hawaii, please stop by our Oahu production rental facility in Honolulu. If you’d like to reach us, send an email to firstname.lastname@example.org or comment below.