Author Topic: Canon 6D  (Read 470013 times)

retardx

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Re: Canon 6D
« Reply #1175 on: November 28, 2019, 04:57:40 PM »
Hello, I'm planning to buy 6d, but maybe I'd like to use it as a webcam on streams so I need unlimited runtime and clean hdmi.
I know by design I cant have them, but with can I bypass it with magic lantern firmware (I saw multiple videos as in ML you can complitely disable overlays = clean hdmi, not sure about runtime)

Also, how sturdy shutter is? How long usally it lasts (i.e. 5d mark II lasts for 500k approx.)

Thanks

Levas

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Re: Canon 6D
« Reply #1176 on: November 28, 2019, 11:53:26 PM »
Ah no raw, that explains it.
The crop modes don’t work with standard h.264 movie recording.
Once te recording is pressed, the camera switches to 1x zoom.

So for higher resolutions, you need to enable raw recording in ML menu.
Go to 5x zoom, hit trashcan button for ML menu. Use q button on raw video option to enter raw video sub menu. Set aspect ratio to 16:9 and scroll to resolution option. On resolution option, you can use the scrollwheel on top of the camera to set desired resolution.
 

kitelaroux

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Re: Canon 6D
« Reply #1177 on: November 29, 2019, 06:30:36 AM »
Sorry for the *way too noob* question but when you're saying this nightly build works on 6D right now we assume a downgrade to 1.1.6 from a camera running firmware 1.1.8, right?

I just jumped into a 6D bought second-hand which was already on 1.1.8 and I'm pretty used to run ML on older 450D and 1100D borrowed from a friend for a while right now which certainly doesn't need any downgrades  :P

So I apologize for the totally stupid sounding question amidst a quite interesting crop_rec conversation.  Thanks in advance!

dazer

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Re: Canon 6D
« Reply #1178 on: November 30, 2019, 07:43:10 AM »
Do i understand correctly that "2480x1396" in the crop mode name only shows maximum theoretical resolution and actual recording resolution depends on selected raw settings (resolution, aspect ration, data format) and sd card specs?

Levas

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Re: Canon 6D
« Reply #1179 on: December 01, 2019, 03:14:16 PM »
Almost right.
Do i understand correctly that "2480x1396" in the crop mode name only shows maximum theoretical resolution and actual recording resolution depends on selected raw settings (resolution, aspect ration, data format) and sd card specs?

SD card specs don't inlfuence any options, slower SD cards give slower recording times (camera stops recording once the internal buffer is filled up, internal buffer fills up when SD card isn't fast enough to handle the write speed.)

The crop mode actually changes sensor read out settings, so it only reads out that certain part/resolution of the sensor, the rest of the sensor isn't readout at all.
ML raw menu let's you select any recording options, within that part/resolution.

Levas

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Re: Canon 6D
« Reply #1180 on: December 01, 2019, 03:52:51 PM »
To give a more simpler option to new people, I've uploaded the build I'm using myself.
It has all the modules needed and activated for raw recording.
It also has the settings I'm using (this is the actual build I'm using on my SD card, I removed the rom.bin files in the data section, which will be rewritten with your own camera roms at first startup)

This is just a ML build, including all the needed modules and set up in the way I'm using it, so for use, you camera must have firmware 1.1.6 and already be able to run ML (bootflag enabled).
If you haven't already enabled the bootflag, download the nightly build for the 6D on the downloads page and do a firmware update with the 'ML-SETUP.FIR' file which is in the nightly build.

Now here is this all in one, already set up lazy build:
https://drive.google.com/file/d/1_mZQUQrossmi8KgjOFg-HkcuLU7_qz8n/view?usp=sharing

When using the above build, you will see at that the following modules are enabled:


Out of the box, raw video recording in 1824x1026 - 16:9 aspect ratio in 14 bit lossless MLV format with audio is set.
Now in order to make use of the higher resolutions in crop mode, select a crop mode in the movie tab:


After selecting a crop mode preset, be sure to check the resolution displayed behind RAW VIDEO in the movie tab menu screen.
You can change/set this resolution by entering RAW VIDEO menu (highlight RAW VIDEO on the movie tab screen and press Q button on camera) now you see this menu:

Although instead of N/A there are resolution and aspect ratio displayed.
You can change the resolution by highlighting the option and use the scroll wheel on top of the camera to adjust it by increments of 16 pixels wide.
Now be sure to be in 5x zoom when recording and setting up the resolution.

Once crop_mode and higher resolution is set, you can record in 5x zoom these higher resolutions.
When in 5x zoom, you will get Canon 5x zoom preview, but this is not the actual framing of your recording.
To see the actual framing, you can do half-shutter press on the shutter button (lightly press the shutter button), this enables a preview(although frame rate is rather slow) of your actual recording/framing.
You can use the half shutter button before recording and during recording. Since the actual preview/framing is rather slow in frame rate, I choose to have Canon preview by default and occasionally check framing with half shutter press.

Now with these high resolutions, you will see that you won't get long recording times, since the camera can't write fast enough.
To get some longer recording times, you can enable 12 or 10 bit options in crop_mode submenu.
Go to the ML menu and MOVIE tab, highlight your crop_mode and press Q button:


There is a variety of options here, but most don't work (these options are used on EOS-M), but the most important option is working here, bitdepth.
You can select 8, 9, 10 or 12 bit here. If OFF is selected, you're using plain 14 bit raw option.

10 and 12 bit are really useful, 8 and 9 bit gives posterised shadows, but you can check for yourself  :P .

For viewing, extracting, post process and convert the MLV files I recommend to use MLV app:
https://www.magiclantern.fm/forum/index.php?topic=20025.0

ENJOY  :D
 
EDIT, this build has the SD_UHS speed hack enabled by default. This works good for SD cards that can handle this speed hack, for example the sanddisk extreme pro 95MB/s series or the newer Sandisk Extreme pro 170MB/s series.
Some cards, which can't handle this hack, can become slower with this hack enabled. Or maybe even won't write at all when the hack is enabled.
When experiencing problems, disable the SD_UHS module in the modules tab (Or buy a better SD card  ;D):


 

Walter Schulz

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Re: Canon 6D
« Reply #1181 on: December 01, 2019, 06:25:49 PM »
Hello, I'm planning to buy 6d, but maybe I'd like to use it as a webcam on streams so I need unlimited runtime and clean hdmi.
I know by design I cant have them, but with can I bypass it with magic lantern firmware (I saw multiple videos as in ML you can complitely disable overlays = clean hdmi, not sure about runtime)

Unlimited HDMI recording duration is implemented in lua_fix experimental builds.

Also, how sturdy shutter is? How long usally it lasts (i.e. 5d mark II lasts for 500k approx.)

6D shutter spec is 100000 (one hundred thousands) actuations.
5D Mark II spec is 150000. But this is statistics and doesn't tell a specific cam's sufferings. Just as an example how bad a camera's life can be: I take my cams on motorbike rides ...
http://www.olegkikin.com/shutterlife/canon_eos5dmkii.htm
Photogs and videographers: Assist in proof reading upcoming in-camera help!. Your input is wanted and needed!

dazer

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Re: Canon 6D
« Reply #1182 on: December 02, 2019, 02:39:26 PM »
I've uploaded the build I'm using myself.
Thank you for your help! :)

David_Hugh

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Re: Canon 6D
« Reply #1183 on: January 06, 2020, 02:01:07 PM »
Hey! A while back I reported that I am having issues with the crop_rec module as well. I noticed something very interesting. When my lens (the APSC Sigma 30mm 1.4 Art - works great on a 6D by the way) was switched to AF when I powered the camera, half shutter press would not show me a framing preview, it would start focusing. However, once I switch it to manual and then BACK to AF, it shows a preview as it should with a half shutter press - even in AF mode. Incidentally, once I did this, 1x3 binning modes became available to me, when they would show a "raw detect error" or similar before. Strange stuff, especially the second part. Nevertheless, now everything works. Is there a way to include 24fps modes in this whole build or do I just need to switch to NTSC for that anyway? Great build, shame that the pixel binning modes (anti - aliasing modes really  ;D )  that bilal got working for the 700D havent made it to the 6D. We have slow mo and we have extended resolutions, but 1080p without aliasing and without crop would be killer. Hopefully this is helpful to one person or another. Thanks again Levas and all the other fine devs ;).

Danne

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Re: Canon 6D
« Reply #1184 on: January 06, 2020, 03:26:41 PM »
1x3 binning modes have been working on 6D for a year or so already.

David_Hugh

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Re: Canon 6D
« Reply #1185 on: January 06, 2020, 09:55:03 PM »
Yes - No binning modes was probably the wrong wording. No resolutions bigger than 1824pixels in 1x1 liveview mode to be precise (at least I think this hasn't been achieved yet...^^). It doesn't matter anyway, the advancements have been great this year, plenty of options to go out and make something beautiful, I wasn't trying to sound dismissive.

Levas

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Re: Canon 6D
« Reply #1186 on: January 08, 2020, 10:22:35 AM »
Hey! A while back I reported that I am having issues with the crop_rec module as well. I noticed something very interesting. When my lens (the APSC Sigma 30mm 1.4 Art - works great on a 6D by the way) was switched to AF when I powered the camera, half shutter press would not show me a framing preview, it would start focusing. However, once I switch it to manual and then BACK to AF, it shows a preview as it should with a half shutter press - even in AF mode. Incidentally, once I did this, 1x3 binning modes became available to me, when they would show a "raw detect error" or similar before. Strange stuff, especially the second part.
That is strange indeed, but good to hear it works.
Is there a way to include 24fps modes in this whole build or do I just need to switch to NTSC for that anyway?
Switching to NTSC won't work. FPS is fixed in the crop modes.
I could make a 24fps build, if I keep the same resolution settings as in 25 fps, it's only a matter of adjusting the B-timer.
Haven't changed the code for months :P so it could take some time to dive into it.

Great build, shame that the pixel binning modes (anti - aliasing
modes really  ;D )  that bilal got working for the 700D havent made it to the 6D. We have slow mo and we have extended resolutions, but 1080p without aliasing and without crop would be killer. Hopefully this is helpful to one person or another. Thanks again Levas and all the other fine devs ;).
Not sure what you mean here, the latest build has two 1x3 modes, 24fps and 25fps. max resolution (24fps) is 1640x2144.
Which can be unstretched in post to either -> 1640 x 714 resolution (perfect sharp image without aliasing) or 4920 x 2144 (which is rather soft due to the 3x horizontal strecth, but far from bad)
If you mean that it is too bad the 6d can't go higher then 1640 x 2144, so for example 1824 x 3078 mode (which would become 1824 x 1026 without aliasing)
Unfortunately 1824x3078 at 24 fps will not work on 6d, CMOS readout is too slow.
Most Canon crop cameras, including the 700d, can read the CMOS quicker then the 6d.
If I remember correct, the 700d has a clockspeed of 32MHz and 6d only has 25.6Mhz.


David_Hugh

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Re: Canon 6D
« Reply #1187 on: January 09, 2020, 03:41:18 PM »
Right - as stated above, no binning mode was a bit of a missleading statement. I specifically meant bilals further advancements on the 700d like getting it to work with 10 bit lossless compression and having liveview (albeit stretched). In a similar vein, I was asking about 24p modes because hey, a frame less is a frame less on the cards buffer. Also, there's no way to switch it if you are on a 24p timeline. By the way, are the crop_rec modes on all camera models with greyscale framing/preview only still? I havent quite kept up with the developements in the last half year or so and there are so many topics and threads to read through by now that I don't no what the state of crop_rec is, so to speak. What's awesome by the way is the 50p mode - easily the most useable "new" preset for everyday filmmaking.