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Panasonic LUMIX G / GF / GH / GX Series
4K and AVCHD on a Micro Four Thirds system camera with interchangeable lenses.


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Old May 7th, 2016, 01:31 AM   #1
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GH4 and "Blackmagic Video Assist 4K".

Has anyone tried out this combination yet? I need a new monitor and one with an added 10 bit 4K recorder might fit the bill.

However I remember that Panasonic had to bring out a firmware update to deal with the Atomos series of 4K recorders, and so something similar may be necessary here.


Ron
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Old May 25th, 2016, 10:51 AM   #2
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Re: GH4 and "Blackmagic Video Assist 4K".

Do you know which firmware version the GH4 needs for the Atomos products? I just got the Ninja Flame and output 10 bit 4K with no problem on firmware v2.3. Smooth as butter.

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Old May 27th, 2016, 01:09 PM   #3
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Re: GH4 and "Blackmagic Video Assist 4K".

Just tried it on mine. Records wonderfully. Just remember to turn off the info display, otherwise... The BlackMagic Video Assist 4K is a nice bit of kit! I'm going to test it out for a greenscreen shot to see the difference between the camera's recording and the BMVA4K's ProRes recording. I'll do both 4:2;2 8-bit and 10-bit output... though 10-bit won't record internally on the GH4.

I'll try to keep y'all posted...
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Old May 28th, 2016, 12:41 AM   #4
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Re: GH4 and "Blackmagic Video Assist 4K".

Goodoh! Look forward to your report.

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Old May 28th, 2016, 06:13 PM   #5
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Re: GH4 and "Blackmagic Video Assist 4K".

I did a quick and dirty test using the Blackmagic Video Assist 4K recording from the GH4 in 4:2:2 8-bit and 10-bit mode. I recorded internally (in 8-bit only). It was a quick and dirty shot just to see if I could discern any difference.

I shot in front of a poorly lit green screen with me running the camera and running in front of the camera, so... I'm not showing it!

But, playing with the image, the 10-bit footage from the 4K looked good to my eyes and played well within Premiere. I screwed up the exposure because I was outside trying to beat the rain. The 8-bit looked just as good. I'll try to post again with images this time, in a few days.

Basically, the GH4 plays really well with the Blackmagic Video Assist 4K. BTW, the 7" screen is awesome!
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Old June 3rd, 2016, 01:23 PM   #6
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Re: GH4 and "Blackmagic Video Assist 4K".

Just updated my BMVA 4K to the 2.0.1 firmware. I can receive signal via the 59.96 NTSC frequency but not with the 24.00 freq. Kinda a mess... But I can still record in 59.96Hz @ 60fps
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Old June 20th, 2016, 10:10 AM   #7
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Re: GH4 and "Blackmagic Video Assist 4K".

Can you downscale to 1080p with the video assist? What about applying LUTs?
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