Author Topic: Canon EOS M  (Read 812707 times)

Pacerx999

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Re: Canon EOS M
« Reply #1850 on: January 09, 2019, 02:18:33 PM »
So utilising crop_rec_4k_mlv_snd_isogain_1x3_presets_2019Jan07.EOSM202

I manage to get both 50fps with mv1080 and the 4k-24fps.

With the 4k-24fps, I was getting a similar colour artefacts to Loknar. I.e. blue/yellow oddness. Seems to be concentrated around horizontal lines

Also overexposure or anywhere close gets pink highlights when exposure is brought down. Highlight reconstruction in MLVApp doesn't help, but Resolve highlight reconstruction does help, but only using MLVFS, which currently doesn't remove focus pixels.

Obviously preview is slow, but finding and maintaining focus is v. difficult.

With all that said, when you get the exposure right (ETTR) and grab focus the quality of the shot is excellent, but the horizontal artefacts are affecting things. Just want to be clear, I think it's Amazing to get 4k RAW out of a 6year old camera, but would like to get this to a great user experience so it could be used for actual project.s

50Fps seems to be working fine, with SD Overclock, I'm getting approx 10sec, but it was a bright scene, so I think that's what limits it due to data rate. But it looks good when slowed down to maybe 80/90fps in Premiere using optical flow.

I see that there is a Jan9 build, so will go on to try that and report back any findings. If MLVs would be helpful for the colour artefacting, just let me know

TA!

Danne

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Re: Canon EOS M
« Reply #1851 on: January 09, 2019, 02:22:00 PM »
4k is hard. Compromise is it runs 3x1 binning(mv720p) which is, well, not 3x3 binning. Useful or not I tend to keep prioritized presets first and then the longer down the list the crazier it can get  :P

masc

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Re: Canon EOS M
« Reply #1852 on: January 09, 2019, 04:28:17 PM »
Also overexposure or anywhere close gets pink highlights when exposure is brought down. Highlight reconstruction in MLVApp doesn't help, but Resolve highlight reconstruction does help, but only using MLVFS, which currently doesn't remove focus pixels.
You should be able to correct pink highlights in MLVApp too: correct first RAW White Level. -> activate Highlight Reconstruction and then lower RAW White Level until pink highlights go away.
5D2.212 | EOSM.202

Danne

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Re: Canon EOS M
« Reply #1853 on: January 09, 2019, 06:22:22 PM »
New build:
https://www.magiclantern.fm/forum/index.php?topic=9741.msg208959#msg208959

Added a 5K 24 fps (squeezed 2.35:1) preset into the game...

optical-work

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Re: Canon EOS M
« Reply #1854 on: January 09, 2019, 07:30:17 PM »
as far as i can see 4k 3x1 mode has better quality than mv1080 mode and raw therapee's defringe tool gets rid of the color artifacts. but there is too much moire compared to mv1080.

Danne

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Re: Canon EOS M
« Reply #1855 on: January 10, 2019, 12:11:12 PM »
New upload. Again  8).
https://www.magiclantern.fm/forum/index.php?topic=9741.msg208959#msg208959

Finally got around to fix the cool 1x3 binning mode which until now was restricted to height stop around 1120. The preset now goes all the way to 1712x2184. Files opens up just fine in Mlv App. More info from this thread(@theBilalFakhouri) about 1x3 binning:
https://www.magiclantern.fm/forum/index.php?topic=22818.msg206134#msg206134

Comparison files:
https://bitbucket.org/Dannephoto/magic-lantern/downloads/1_x3_M10-1218.MLV
https://bitbucket.org/Dannephoto/magic-lantern/downloads/3x3_M10-1219.MLV

What eventually worked was bypassing any height restriction for eosm in raw.c and then start expanding registers. Commit:
https://bitbucket.org/Dannephoto/magic-lantern/commits/0b5f6fe465afe77de97d57255151f8644b067395

Also added some rearrangements and took the liberty to rewrite a few info parts.


Next up, 100D...

jacquaviva

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Re: Canon EOS M
« Reply #1856 on: January 10, 2019, 11:07:18 PM »
Hi,

I am a bit confused about crop factors from all these new presets.
Are 5K, 4K & 1712x2184 still close to 3.33x crop ?

Is there still any hope about 1.6x crop or it always will be 1736x696 stretched to 1736x1160 ?

Thanks in advance.

By the way, since Canon M flange distance is 18mm the same than Sony E, I found how to build and adapt a Sony E mount part to the EOS M in order to use the Fotodiox ND Throttle Canon EF to Sony E (among others).
It works very well. I only use full sensor 1.6x RAW video and to avoid moire and aliasing, I have bought a 6D VAF Mosaic Engineering AA filter and achived to tinker with to adapt it to the camera. Working very good as well.
If anybody wants more information.

12georgiadis

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Re: Canon EOS M
« Reply #1857 on: January 10, 2019, 11:23:25 PM »
to avoid moire and aliasing, I have bought a 6D VAF Mosaic Engineering AA filter and achived to tinker with to adapt it to the camera. Working very good as well.
If anybody wants more information.
Do you have some instructions and pictures to show us how to adapt VAF filters ? Sounds interesting =)

dfort

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Re: Canon EOS M
« Reply #1858 on: January 11, 2019, 02:19:07 AM »
Here's someone else who shoehorned a VAF filter into the EOSM. No instructions or photos. Hint -- Scotch tape.

Yes but it's on a cheap one. So you have more space to do it.
It's a bad work with scotch, I am not as proud of it to share pictures of it. Sorry.
You just have to put any kind of filter between the lens and the sensor and it's effactive...
5D3.* 7D.206 700D.115 EOSM.203 EOSM2.103 M50.102

Danne

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Re: Canon EOS M
« Reply #1859 on: January 11, 2019, 09:55:16 AM »
Is there still any hope about 1.6x crop or it always will be 1736x696 stretched to 1736x1160 ?
?
If you mean to record mv1080p 3x3 binning it´s already working.

loknar

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Re: Canon EOS M
« Reply #1860 on: January 11, 2019, 12:16:11 PM »
Is it just me, or build crop_rec_4k_mlv_snd_isogain_1x3_presets_2019Jan10.EOSM202 is creating corrupted frames in 1x3 binning mode?

And this is probably stupid question, but instead of 3x3,1x3,3x1, would it be possible to use binning or line skipping 2x2...? Probably using some array operations, like readout whole sensor and then decrease it in size...not quite sure if limit is on processing side, or write speed size (or if it even possible to edit raw frame before saving it...but given how many "impossible" things have been already done...).

Danne

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Re: Canon EOS M
« Reply #1861 on: January 11, 2019, 12:23:35 PM »
Corruption is not unlikely. What were your exact settings? Will check for it.

Anyway, here´s an attempt in Mlv App using dualiso. Looks pretty nice:

Here´s a dualiso attempt coming from eosm and it´s 1x3 mode setting. Recorded in:
10bit,
sd_uhs,
24 fps,
dualiso 100/1600,
1600x2040(2.35:1)


mlv sample:
https://bitbucket.org/Dannephoto/magic-lantern/downloads/1x3_dualiso_eosm_M11-1209.MLV








Danne

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Re: Canon EOS M
« Reply #1862 on: January 11, 2019, 12:52:35 PM »

jacquaviva

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Re: Canon EOS M
« Reply #1863 on: January 11, 2019, 02:44:32 PM »
I mean what will be the max resolution for RAW video using full sensor read out (1.6x crop) ?
I know it's working with 1736x696, but not more for 24fps.

And what are the crop factors for new preset 4k & 5k ?

Danne

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Re: Canon EOS M
« Reply #1864 on: January 11, 2019, 02:56:53 PM »
Just try it yourself and draw conclusions. Don´t really get what you´re asking.

Walter Schulz

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Re: Canon EOS M
« Reply #1865 on: January 11, 2019, 02:57:44 PM »
@jacquaviva:
Crop factor calculation into 35 mm terms:

(Sensor horizontal pixel count / ML horizontal resolution in ML crop mode) x 1.61

It's not exactly rocket science, you know?
Photogs and videographers: Assist in proof reading upcoming in-camera help!. Your input is wanted and needed!

jacquaviva

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Re: Canon EOS M
« Reply #1866 on: January 11, 2019, 03:10:00 PM »
Thanks for the crop factor calculation.

I just would like to know if we can get more resolution for full sensor RAW video at 24fps.


Danne

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Re: Canon EOS M
« Reply #1867 on: January 11, 2019, 03:44:55 PM »
New build:
https://www.magiclantern.fm/forum/index.php?topic=9741.msg208959#msg208959

Seems we can get 1736x1160 in mv1080p mode rather than 1736x1120.
This seems to be the friendly match:
Code: [Select]
        case 0xC0F06804: return 0x4a601d4;
        case 0xC0F0713c: return 0x4a7;
case 0xC0F07150: return 0x499;

henricusmaria

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Re: Canon EOS M
« Reply #1868 on: January 11, 2019, 05:48:04 PM »
Just wondering.. is there a big quality difference between the 10-bit and 12-bit option? I did some tests today in the 2.5k setting at lower resolution (1712x964) in order to shoot continuous in 12 bit. Here is a short clip.

https://youtu.be/_6ckNT4LAV4

I accidentally found out that when I activate movie crop mode in this setting the field of view gets a bit wider.

dfort

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Re: Canon EOS M
« Reply #1869 on: January 11, 2019, 06:26:45 PM »
Looks like you'll need one of these to go along with those massive sized files:



MSRP of $499.99, Yikes!
5D3.* 7D.206 700D.115 EOSM.203 EOSM2.103 M50.102

bergamote

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Re: Canon EOS M
« Reply #1870 on: January 11, 2019, 09:42:33 PM »
Hey guys! happy new year and such.
Been playing around with today's build and 2.5K preset script (and sd card overclock). The max filming time seemed really dependent on the exposure. Underexposed goes on and on, but ETTR and it stops after less than 10s. (more data i take it)
I accidentally managed to get a good shot with 1x3 mode and the result was super awesome!
Tried to get 5K going but without an automated script I tend to mostly mess up the settings and lose the live view (garbled pink stripes) and have to delete the settings folder to get anything working again.

I'm wondering, does the 2.5k-10bit-XXXiso lua script actually change the raw bitrate to 10? mlv_play shows 14 bpp.
Also, is "framing" view available in 2.5k or is it just for 1080mv?
Cheers

Upstep

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Re: Canon EOS M
« Reply #1871 on: January 12, 2019, 08:00:08 PM »
I'm getting corrupted frames using 1x3 preset and sd_uhs with the latest build. (They happen here and there. "Purple glitch")
Any information I can give to help you try to solve it?
What exact settings did you @Danne use to get uncorrupted footage?

ctfire

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Re: Canon EOS M
« Reply #1872 on: January 12, 2019, 08:51:29 PM »
hey, is anybody have a problem with shutterspeed in latest build. when activated crop modes can go lower than 1\60 (

bergamote

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Re: Canon EOS M
« Reply #1873 on: January 12, 2019, 09:06:55 PM »
Okay, sorry for the stupid questions, answers were in the thread..
Experimented some more with the 1x3 preset and it's so cool. Only getting a couple of seconds before it crashes but boy, they're good looking seconds!
@ctfire yeah, the shutter speed was a bit weird for me too, it seems to randomly set itself to 1/35 or 1/80 when changing presets. How many fps are you shooting at?



henricusmaria

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Re: Canon EOS M
« Reply #1874 on: January 13, 2019, 09:48:46 AM »
hey, is anybody have a problem with shutterspeed in latest build. when activated crop modes can go lower than 1\60 (

Yes, the normal mv1080p cropmode changes the shutter speed to 1/390 (!)
The rest of the modes work normal.