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Author Topic: 8-bit Video in a 10-bit Wrapper  (Read 70410 times)

eronald

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Re: 8-bit Video in a 10-bit Wrapper
« Reply #20 on: October 08, 2015, 12:12:33 am »

I have the Gh4 and yag box running to a BMC recorder by Sdi long cable - unlike other 'dslrs' that Sdi is unique so I can get 10bit with a good connection.

My typical use would be to have the camera stuck on car window and the recorder sitting on the seat - not a compact set up - a specialist one.

the BMC recorder does not have a menu - just a record button - which being on the recorder acts as a 'remote' so the camera can be on a the hood/bonnet. The recorder also has HDMI and SDI out for 2 monitors!

S

Interesting use, and provides a clue to who buys the yag box.

Edmund
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Morgan_Moore

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Re: 8-bit Video in a 10-bit Wrapper
« Reply #21 on: October 08, 2015, 06:38:44 am »

Yep basically I have a 'no hdmi' rule in my productions - I also have a 'no shi_tty little batteries' rule - Obviously both consistently broken.

the yag box is cheap if you find a dealer desperate to shift it - I think the yag and gh4 cost me 1200uk new - which is cheap versus A7+XLRbox, or BMC and XLR box.

I even already had Dtap to XLR to power it - so not another 'dummy' battery unlike the Sony.

The yag is full of idiot issues like delayed sound monitoring and restricting the flip screen.. so Im only 50% happy with it

I need to rent an 07q and see what Quad SDI,10bit422/4k/lvog is like.



« Last Edit: October 08, 2015, 06:43:59 am by Morgan_Moore »
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Sam Morgan Moore Bristol UK

eronald

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Re: 8-bit Video in a 10-bit Wrapper
« Reply #22 on: October 08, 2015, 05:54:17 pm »

Yep basically I have a 'no hdmi' rule in my productions - I also have a 'no shi_tty little batteries' rule - Obviously both consistently broken.

the yag box is cheap if you find a dealer desperate to shift it - I think the yag and gh4 cost me 1200uk new - which is cheap versus A7+XLRbox, or BMC and XLR box.

I even already had Dtap to XLR to power it - so not another 'dummy' battery unlike the Sony.

The yag is full of idiot issues like delayed sound monitoring and restricting the flip screen.. so Im only 50% happy with it

I need to rent an 07q and see what Quad SDI,10bit422/4k/lvog is like.

You can get the old Odyssey without the 4K HDMI real cheap.

Edmund
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adrjork

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Re: 8-bit Video in a 10-bit Wrapper
« Reply #23 on: October 09, 2015, 01:48:53 am »

What is my ideal camera? A practical little cam that can do big stills (to crop in post), can handle natural-light without problems, can do videos with good bits for grading. Simply it doesn't exist.
Well, perhaps I don't agree with myself! Do you remember the old 5DM3?
Seriously, I've finally found out a very informative post by Sareesh Sudhakaran (THIS) about apparent (!) advantages of 10bit over 8bit aquisition. Finally I've got the "technical and long-winded" answer I was searching for! (Thanks a lot!)
Really grossly: a noisy take wastes part of the potential range of bitdepth, and anyway codec compression reduces the actual difference between 8bit and 10bit. I hoped that noisy GH4's 10bit Prores was better than A7S' 8bit because I thought that a difference of 2 bits would have made the difference in post... I was wrong.
The real difference is between compressed codec and RAW. So, for my personal under-3K$-compromise-cams' challenge the contenders are:
1. A7S2: the best for low-light, 8bit codec surely breaks with heavy grading, 4K resolution;
2. BMCC2.5k: less noisy than the other BMCs but still noisy in low-light, 12bit RAW rocks in grading, 2K resolution;
3. 5DM3 (well... why not?): the deposed king of low-light, 14bit RAW w/ Magic Lantern super-rocks in grading, resolution sucks...
Ok, it's not sharp as HD should be, but even HD sucks compared to 4K, and even 4K will suck compared to 8K, and so on...
I was searching for a camera for video and big stills, for heavy grading and compositing, for low-light conditions: is Canon my winner?
« Last Edit: October 09, 2015, 01:59:29 am by adrjork »
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