GH4 Gh4 4K recording with external recorder

kopan

Well-known member
Hi. I have question about external recorders. Is it possible if I record internally with 4k and use external recorder and in the same time to record HD as a backup. For now 4 K is not neccesary for production that i do but i would like to record 4K because of the posibility to reframe my shots. Like i said external recorder would be only backup.
 
Hi. I have question about external recorders. Is it possible if I record internally with 4k and use external recorder and in the same time to record HD as a backup. For now 4 K is not neccesary for production that i do but i would like to record 4K because of the posibility to reframe my shots. Like i said external recorder would be only backup.

I believe you can in 8-bit mode but not in 10-bit.
 
Both recordings will be limited to 8-bit, which is not a good idea. It can create banding issues and will quickly fall apart if you do color correction.
 
It's not a bad idea. The 4k can take quite a bit of pushing and pulling downscaling to 1080p, and the 200mbit 1080p footage is reasonably robust too. This assumes you're not trying to emulate a log profile with the camera, which is when things really do fall apart quickly. Your 1080p footage will also think it's 10bit, which is a better starting place for grading anyway
 
Funny how a few years ago, people were astonished at how well DSLR footage held up in grading - now people claim 8-bit will fall apart. It'll fall apart the same amount it did 3 years ago when people were amazed by it.

I think a lot of people get bitten in the butt by shooting "log" or emulating log, or shooting very flat with the legendary "then grade it in post" advice. I think you're much better off getting 8-bit footage as close to your final look as possible on set. Particularly white balance. And especially getting some light into shadow areas.

It's great that we've gotten affordable raw footage from BMC and Canon, but there's been thousands of beautiful projects shot with T2i's, 5D's, etc. Just have to know your gear and its capabilities.
 
It's bit like when we shot 16mm negative/reversal: Negative gave us more leeway and more possibilities in post but reversal could be - if treated right - also very good. The distinction between 8/10 bit is even less than that. When people complain about skin-tones they run into problems often because they are disciples of "flatmania". Sure: If you know what you do and have the time and the knowledge, shooting "flattish" has it's advantages. But bringing your image down and later lift it in unbecoming ways or just throw a LUT at it can produce strange results.
 
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