I have been work hard on my GH4 course for the past couple of weeks, I ran into an issue while recording from the HDMI output, so I started to review more HDMI cables. In this video test you will see that the most expensive is not always the best.
- Pearstone HDMI cable Cleanest for both the Sony a7S and GH4
- Ikan HDMI cable Noisy audio and white dots with GH4, clean with a7S
- Atomos HDMI cable Few red dots with GH4, clean with a7S
Note: I have had two different GH4 cameras and both had an issue with the Ikan HDMI cable. I have also used two different Ikan cables as well. I repeated this test many times with the same results. Also I was seeing the same thing on the Ikan monitor compared to the recordings.
I own another Pearstone cable (HDMI mini) and it works fine too.
I got this from the Atomos team from a trouble ticket I started:
With HDMI there shouldn’t be any degradation in quality since it’s a digital signal.
Either the entire signal should be transmitted accurately, or it should not be transmitting at all.
I’m also attaching our development team on this to see if they have any additional insights.
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