Theoretical Max Continuous Recording with 12 and 10 bit raw and discussions etc.

[fotojohni]

Many people are wondering just how awesome 12 and 10 bit raw will be.  Your questions will soon be answered thanks to my rudimentary maths skills.  Read on.

For cameras recording at 21MB/s (550D, 600D, 1100D)

   Max 16:9 resolution:

      12 bit:  1024 x 576
      10 bit: 1088 x 640

   Max 2.39:1 resolution:

      12 bit 1152 x 496
      10 bit 1280 x 544


For cameras recording 40MB/s (6D, EOS-M)

   Max 16:9 resolution:

      12 bit:  1408 x 800
      10 bit: 1536 x 864

   Max 2.39:1 resolution:

      12 bit: 1600 x 672
      10 bit: 1792 x 752 (max resolution in full frame mode)

For cameras recording 60MB/s (5D mk2, 50D)

   for 5D: 10/12 bit 1880 x 1058 (full frame)
   for 50D: 10/12 bit 1592 x 1062 (full)

For 5D mk3 recording at 90MB/s

   biggest gains for 60fps and 5x crop:

   Max 16:9 @ 60 fps:

      12 bit: 1664 x 592
      10 bit: 1792 x 624

   Max rez @ 5x crop:

      12 bit: 2048 x 1158
      10 bit: 2344 x 1320

Hope this clears up all the confusion.  This would be totally sweet, but it's not solving any miracles and using it comes at a cost of reduced tonality particularly in the shadows.

sources:
https://docs.google.com/spreadsheet/ccc?key=0AgQ2MOkAZTFHdFFIcFp1d0R5TzVPTVJXOEVyUndteGc#gid=5
http://web.forret.com/tools/video_fps.asp?width=1792&height=780&fps=24&space=raw&depth=10

[a1ex]

You should include the resolutions at 14-bits, because that google doc is being edited and numbers may change.

[Roman]

Also people are going "If we can shoot at xyz bits, we can use 10million x 8million resolution!"

Forgetting there's a certain sized resolution that's the maximum for each camera, some/most of which are already recording at the maximum available.

[eyeland]

Could someone add calculations of data rate for 5D mk III 24/25fps @ different 1920 resolutions?
My main interest in 10/12 bit is the hope of using cheaper cards and/or get more footage per card in the field
I wish there was a CF card rental service in Copenhagen

[a1ex]

Also note that 10/12 bit is not going to work at FullHD resolutions, unless you overclock the CPU by a factor of 2 or 3.

[linyingyen]

Also note that 10/12 bit is not going to work at FullHD resolutions, unless you overclock the CPU by a factor of 2 or 3.

Isn't the camera doing the H.264 conversion even when recording raw?
If that can be turned off, would it be possible for 10/12 bit with that extra clock cycles?

[a1ex]

No, it's not. H.264 happens on a dedicated chip, 14-12 conversion from the other thread is done on the ARM CPU.

[linyingyen]

No, it's not. H.264 happens on a dedicated chip, 14-12 conversion from the other thread is done on the ARM CPU.

Thanks for the clarification
I assume H.264 chip is not programmable to do the 10/12 bit instead?

[a1ex]

It probably is, but we have no idea how to do it.

[linyingyen]

It probably is, but we have no idea how to do it.

haha, maybe someday.
thank you for all the hard work so far 

[mvejerslev]

>I wish there was a CF card rental service in Copenhagen.

Shouldnt be too hard. Just go ask in a rent shop.

[Critical Point]

So, you're saying that on a 600D, even with 10 bit raw, it's still going to be impossible to shoot 1280x720 @ 24fps ? Very disappointing.

[eyeland]

>I wish there was a CF card rental service in Copenhagen.
Shouldnt be too hard. Just go ask in a rent shop.

Pleas do share a link or two if you know of any
The shops that I have a good relationship with eg. Kamerahuset and a few others sadly don't offer these services

[AgentJJ]

For cameras recording 40MB/s (6D, EOS-M)

   Max 16:9 resolution:

      12 bit:  1408 x 800
      10 bit: 1536 x 864

   Max 2.39:1 resolution:

      12 bit: 1600 x 672
      10 bit: 1792 x 752 (max resolution in full frame mode)

Add 650D to this pile (currently shooting @ roughly 40-41 MB/s)

[ShootMeAlready]

This thread goes over some key things I want to know but its missing the number of frames

For example my 70D which has same write speed as 6D (41 MB/s)

3X Zoom Mode
2240x954 @2.35/60fps 108 frames, 1.5s
2048x872 @2.35/60fps 151 frames, 2.5s
1920x818 @2.35/60fps 205 frames, 3.5s

1X Mode
1824 x 776 @ 2.35 / 24fps got 14s.
1792x762 @ 2.35 /24fps   got 16s. 
1728x736 @ 2.35 /24fps   got 22s.
1600 x 680 @ 2.35 / 24fps got 62s.   Which for all my video purposes is the same as continuous.

So  I am curious to know at 12bit raw for 1824x766 /24 fps, how long the clip lasts.

I can get 1920 @ 2:35/60 fps (3X zoom mode), 14 bit raw for 3.5 seconds.  If I can get 12 bit raw same for 7s That would be good for a pan-shot.

So the number of frames, or simply how many seconds really matters.  The main advantage the 70D will have over the Sony A6500, will be raw video, so knowing this is important.

[Quentin]

Can you drop the resolution to crank the FPS to 200 ?

[Oswald]

Can you drop the resolution to crank the FPS to 200 ?

No.

[aschille84]

For example my 70D which has same write speed as 6D (41 MB/s)

3X Zoom Mode
2240x954 @2.35/60fps 108 frames, 1.5s
2048x872 @2.35/60fps 151 frames, 2.5s
1920x818 @2.35/60fps 205 frames, 3.5s

How you get this resolution at 60 fps is puzzling to me..

[Walter Schulz]

How you get this resolution at 60 fps is puzzling to me..

Canon menu: NTSC, 720p60
ML: Crop mode

[aschille84]

3X Zoom Mode
2240x954 @2.35/60fps 108 frames, 1.5s
2048x872 @2.35/60fps 151 frames, 2.5s

Im still curious about this. None of my crop mode settings give me this on the 5D3. 1920 max.

[Walter Schulz]

And which version you are using?
Does crop > 1920 work with the nightlies for you?

[aschille84]

Yes, it works but not above 30fps. Even in 720p mode. That led me to believe that those resolutions mentioned were only theoretical.
Im using the 24 dec_crop rec-version.

[Walter Schulz]

http://www.magiclantern.fm/forum/index.php?topic=18325
And ShootMeAlready is working with 70D and I can verify it for 650D. You may ask other 5D3 owners if 60fps cropped 10-bit RAW > 1920 is possible with 5D3.113 and/or 5D3.123

[Quentin]

Recording is awesome. So sweet, less hangry, no need to press tricky buttons.
The major problem is monitoring. If camera is idle, you can capture incredible content.
When you want to pan/tilt, you dont know the framing/cropping of the camera