Author Topic: Questions regarding RAW video on 5D Mark III  (Read 2496 times)

Aeidxst

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Questions regarding RAW video on 5D Mark III
« on: September 17, 2017, 02:21:34 AM »
Hi, I've got a couple of questions. I can't seem to find simple answers to this, I'm sorry if it bothers some of you. I tried my hardest Googling this, but couldn't find simple answers. I'm also a big noob when it comes to tech.

Small introduction: I've been shooting in RAW with a 5D Mark II for a few years now. Always recorded 1856x1044, and upscaled to 1920x1080. When I wanted to do something with slomo, I always had to use Twixtor for it. But I'm hesitating to buy a Mark III for cheap, and I'm having questions regarding slow motion.

I'm reading everywhere that the Mark III can RAW record at 50fps and 60fps. Can it also RAW record at 48fps? And if yes, what max. resolutions with (and without) continuous recording?

I'm asking because 24fps in the end is my favorite frame rate. And with that in mind, 48fps is way easier to manage. I'd really love to shoot high fps footage, hence my hesitation to buy the Mark III. But I really want to be sure before buying it. I hope anyone can clarify.

Thanks in advance.

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #1 on: September 19, 2017, 02:39:38 PM »
Anyone? Kind of need clarification on this...

ewinemiller

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Re: Questions regarding RAW video on 5D Mark III
« Reply #2 on: September 19, 2017, 04:26:18 PM »
The experimental build at

https://builds.magiclantern.fm/experiments.html

will get you 48fps at 1920x1040. Seems to work fine in my brief tests.

DeafEyeJedi

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Questions regarding RAW video on 5D Mark III
« Reply #3 on: September 19, 2017, 05:23:28 PM »
Or 45p @ 1080p. Even the 60p @ 1920x800p is still usable when stretched to 1080p in post. If I were you I'd scoop up a used 5D3 body while you can before their street prices go up again.

https://www.amazon.com/gp/aw/ol/B007FGYZFI/ref=mw_dp_olp?ie=UTF8&condition=all
5D3.113 • 5D3.123 • EOSM.203 • 7D.203 • 70D.112 • 100D.101

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #4 on: September 20, 2017, 01:18:24 PM »
The experimental build at

https://builds.magiclantern.fm/experiments.html

will get you 48fps at 1920x1040. Seems to work fine in my brief tests.
But it isn't possible in an official nightly build?

And will 1920x1040 at 48fps allow me to record continuously?

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #5 on: September 20, 2017, 01:22:12 PM »
Or 45p @ 1080p. Even the 60p @ 1920x800p is still usable when stretched to 1080p in post. If I were you I'd scoop up a used 5D3 body while you can before their street prices go up again.

https://www.amazon.com/gp/aw/ol/B007FGYZFI/ref=mw_dp_olp?ie=UTF8&condition=all
Yeah, I know I can stretch 1920x800 to 1920x1080, but I'd rather keep the original proportions/dimensions.

ewinemiller

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Re: Questions regarding RAW video on 5D Mark III
« Reply #6 on: September 20, 2017, 06:51:41 PM »
But it isn't possible in an official nightly build?

And will 1920x1040 at 48fps allow me to record continuously?
Correct, not available in nightly.

It will depend on your scene and ISO, which feed into how well each frame compresses, and card speed, but in general yes. If you find that that you're on the edge, you can reduce the vertical height to reduce the bandwidth requirements.

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #7 on: September 30, 2017, 01:54:48 PM »
The experimental build at

https://builds.magiclantern.fm/experiments.html

will get you 48fps at 1920x1040. Seems to work fine in my brief tests.
So I'm testing right now. The max. fps I can get is 40,201. Even if I put the fps override at 48fps, the actual fps is still stuck at 40,201.

Tested this at 1920x1032, doesn't seem to work. I'm using a SanDisk 64GB 160 MB/s CF card, so that can't be the problem either.

Can anyone help me out? I was planning to shoot with this tomorrow...

EDIT: I just tested the latest official build for 5D Mark III, and I figured I could also record 48fps with it. So why would I go for the other experimental build...?

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #8 on: September 30, 2017, 10:37:08 PM »
Really need help/clarification asap, I'm going to shoot tomorrow and my only body atm is the 5D Mark III  :'(

Ilia3101

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Re: Questions regarding RAW video on 5D Mark III
« Reply #9 on: September 30, 2017, 10:45:22 PM »
Maybe 60fps needs to be set in Canon menu?
5D2

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #10 on: September 30, 2017, 10:55:45 PM »
Maybe 60fps needs to be set in Canon menu?
If I do that my max vertical resolution wil be 648 or so, which means I'd have to stretch (something I wanted to avoid since I don't want to lose image quality).

Also, could you clarify on this: I just tested the latest official build for 5D Mark III, and I figured I could also record 48fps with it. So why would I go for the other experimental build...?

Walter Schulz

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Re: Questions regarding RAW video on 5D Mark III
« Reply #11 on: September 30, 2017, 11:05:42 PM »
1080p, 48 fps uncompressed 14-bit RAW with Nightly Build?

1920 x 1080 x 14 x 48 / 8 = 174,184,400 Byte/s =  166.1 MByte/s

Nope, won't do continuous.

Aeidxst

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Re: Questions regarding RAW video on 5D Mark III
« Reply #12 on: October 01, 2017, 12:17:30 AM »
1080p, 48 fps uncompressed 14-bit RAW with Nightly Build?

1920 x 1080 x 14 x 48 / 8 = 174,184,400 Byte/s =  166.1 MByte/s

Nope, won't do continuous.
I see. Then what's the difference between the nightly build and the experimental build?

Has the experimental build just been made for the sake of continuous 48fps recording?

Walter Schulz

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Re: Questions regarding RAW video on 5D Mark III
« Reply #13 on: October 01, 2017, 12:22:11 AM »
1: Answered in threads linked in experimental build page.
2: See 1.

Mikssa

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Re: Questions regarding RAW video on 5D Mark III
« Reply #14 on: November 01, 2017, 09:15:34 AM »
Thanks for your nice post to teach us more in this topic.