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Messages - Levas

Pages: [1] 2 3 ... 35
1
Raw Video / Re: Please let me know.
« on: Yesterday at 07:05:43 PM »
Here's a chart with ML capabalities  for different cams.
https://docs.google.com/spreadsheets/d/16cgnRivbUv7nA9PUlCLmLdir3gXdIN3pqzCNAAybepc/edit#gid=5

In my opinion the 50D is way worse then the 6d you're using now.
50D is crop sensor with max video resolution of 1584 pixels wide, so not nearly 1920 pixels for Full HD.
And no audio options.

At the moment, with your 6d, you have continuously raw recording in 10bit, 24fps at 1824 × 730 (1: 2.50 aspect ratio).
Only things that could be better are
-higher resolution
-higher Bit rate (12 or 14 bit)
-aspect ratio (instead of 1:2.50 -> 16:9)

For the above you need higher writing speeds, so a camera with compact flash.
In that case, the choice is limited to 5d2, 5d3 or 7d.  (50d and 7d don't have higher resolutions in full sensor mode then the 6d)

Maybe go for a 5d2 or 5d3 both for video and stills and sell the 6d ?

Or be happy with the 6d and master the limitations for raw video.
For shots shorter then 30 seconds, you could use 12 bit.
Or for 16:9 aspect ratio use 1824 x 972 in 10 bit 24fps and have about 15 to 20 seconds recording time.
 

2
Camera-specific discussion / Re: Canon 6D
« on: Yesterday at 09:51:00 AM »
While changing memory cards a few times for testing the builds of dfort, I got two times that the red led led light started burning and stayed on while the camera didn't react to on/off button, battery pull solved it. Never seen this before, should I be worried that the error from a few post earlier has to do with this behaviour ?

3
Camera-specific discussion / Re: Canon 6D
« on: Yesterday at 09:39:58 AM »
Wanted to try the crop_rec module from the 6D-crop_rec.zip.
But I can't get it to work with the latest nightly build for 6d ?
It won't load/link the modules at camera startup.

4
Camera-specific discussion / Re: Canon 6D
« on: Yesterday at 09:20:22 AM »
@dfort You got my attention  :D

Tested the highly experimental build: crop_rec_4k.2017Oct15.6D116
Used the mlv_rec module and the crop_rec module (So not MLV_Lite)
And I got this error on screen and I believe error 70 on the top display

Quote
ML ASSERT:
SRM_BUFFER_SIZE == raw_buffer_size
at ../../src/exmem.c:380 (srm_malloc_cbr), task RscMgr
lv:1 mode:3

RscMgr stack: 174e70 [174f88-173f88]
0xUNKNOWN  @ ea80:174f80
0xUNKNOWN  @ 39dbc:174f58
0x00039AB4 @ ff0ef3d0:174f20
0xUNKNOWN  @ 39ae4:174f10
0xUNKNOWN  @ 39b6c:174ef0
0xFF202134 @ ff204488:174ed8
0xUNKNOWN  @ ff202304:174eb0
0x0044C930 @ 45b8ec:174ea0
0x0044C468 @ 44c990:174e70

Magic Lantern version : Nightly.2017Oct15.6D116
Mercurial changeset   : 5a67a9cd8aa9 (crop_rec_4k_6D_wip) tip
Built on 2017-10-16 01:49:21 UTC by [email protected]
Free Memory  : 304K + 2315K

5
Camera-specific discussion / Re: Canon 6D
« on: October 03, 2017, 09:44:51 AM »
I'm not using the latest experimental build, so can't reproduce what you're saying.

Are you in M mode on the mode dial ?

And I'm wondering, what does your display on top of your 6d say for shutter time ?
Could it be just a wrong number in the ML interface ? I'll always trust on the shutter time which is displayed on the top display of the Canon 6d.



7
Feature Requests / Re: [IMPOSSIBLE] Canon 1100d 1080p
« on: August 25, 2017, 07:25:01 PM »
Nope.
It has not enough megapixels for 1080.

For video canon uses pixelbinning en line skipping. Horizontally it combines every 3 pixels from the same color and vertically it reads a line, skips 2 lines again and again.
Some explanation with pictures:
http://www.magiclantern.fm/forum/index.php?topic=16516.0

For this method it needs 3 times the amount of pixels for a certain video resolution.
Full HD is 1920 pixels wide, 1920 x 3 is 5760 pixels, so for full HD you want a sensor that is 5760 pixels wide. Canon uses sensors in 3:2 aspect ratio.
So this sensor needs a vertical resolution of 5760 / 3 x 2 = 3840 pixels.
So for perfect (Canon DSLR type) Full HD you want a 5760 x 3840 = 22.1 Megapixel sensor.
And it is not a coincidence that the Canon 5dIII has exactly that resolution  ;D

The 1100D has a horizontal resolution of 4272 pixels. 4272 / 3 = 1424 pixels for video resolution.
Aspect ratio of video is 16:9 so the 1100D should be capable of recording 1424 x 801 pixel resolution. Which is downscaled by Canon to the more common video resolution  1280 x 720.

There are a lot of 18 megapixel Canon camera's that shoot full HD, but it actually is upscaled a little, they shoot about 1728 x 972 resolution video, which is upscaled in camera to 1920 x 1080.

For more info on which cam can do what:
http://builds.magiclantern.fm/features.html

8
Camera-specific discussion / Re: Canon 6D
« on: August 25, 2017, 04:44:56 PM »
@ keepersdungeon, replied your message about the lagging video.

Using adtg_gui for crop mode recording is a pain in the ... you have to alter several settings/registers with adtg_gui and then it works, BUT as far as I know, you can't save these register/settings and therefore you would have to rechange them every time you turn on your camera.

For crop mode I use the 5x zoom, with magic lantern slow low resolution grayscale preview, for framing my shot. And for the recording I use the 10x zoom, which gives me nice high resolution live view, although not the correct framing( more zoomed in.


9
Raw Video / Re: RAW with very bad quality
« on: July 29, 2017, 08:02:17 PM »
The DNG's look good, really sharp and detailed  8)
The staircase is maybe a little bit underexposed, which could explain a little noise, because it's mostly shadow area's.

If the final video looks soft/unsharp, that  could also be in your export settings in after effects, wrong export settings can kill fine detail.

Can you share your export settings ?



10
Raw Video / Re: RAW with very bad quality
« on: July 29, 2017, 04:40:10 PM »
Watching the two clips on a desktop screen and I don't see any grain/noise  ??? Could be the youtube compression hiding the noise...
Maybe you can share one DNG of both clips ?

Sharpness looks very normal to me, for an unedited clip.
That said, lenses are not at their sharpest with the aperture/diaphragm wide open or fully closed.
For sharpness it's best to stick around f8/f11




11
Just wondering, did you ever shoot mlv's with iso 12800 before?
Hot/dead pixels is very normal with that high iso's.

When you start up the camera and take a picture in low iso, for example iso 400, how does the picture look ? I expect normal pictures without red dots?

You can try remappjng dead/hot pixels by putting on the bodycap and do a manually activated sensor cleaning. Google for it, dead hot pixel remapping canon.

After this, some new high iso files probably have less red dots.

12
Camera-specific discussion / Re: Canon 6D
« on: July 24, 2017, 04:42:17 PM »
You want screenshots of the free memory dialog on the 6d I guess ?
Which builds should I download for the before and after screenshots ?

13
Raw Video / Re: 10 vs 14bit quality?
« on: July 10, 2017, 08:49:26 PM »
Must be the software I guess ???
Quality difference in bitdepth should be in the shadow parts...
How do the files look in acr without any settings adjusted, is the exposure the same?
I'm using software that generates genuine 12 or 10 bit dng's, and in some software the standard exposure is off, like it's reading it as an 14 bit file. So the file is a bit darker from the start, but the data is all there, only have to adjust exposure.

14
Raw Video / Re: 10 vs 14bit quality?
« on: July 10, 2017, 10:46:27 AM »
Alex did a post about bit depth and quality in the crop sec on steroids topic.
He posted a table with different bit depth settings, bassically you want to be in the black number range:
http://www.magiclantern.fm/forum/index.php?topic=19300.msg183231#msg183231

According to Alex: using 14 bit adds no extra quality/detail.
From ISO 100 to 800 -> 12 bit should be able to capture all the detail.
At ISO 1600 comes the tipping point, 12 bit or 10 don't differ that much.
Above 1600 you could use 10 bit, 12 bit has no advantage here because of the noise.

So ISO 100 - 800 -> 12 bit
ISO 1600 and above -> 10 bit



15
Pink highlights, it's probably the software that doesn't handle the files right, nothing wrong with your files.
Try some other software (or newer version) for viewing mlv files.



16
Amazing, always like a good hyper lapse.
Did you also use the tripod for the hyper lapse parts, or is the tripod only used in the more static time-lapse parts ?
I'm still wondering if hyper lapse can be done handheld and be stabilised in post ?

17
Reverse Engineering / Re: UHS-I / SD cards investigation
« on: June 19, 2017, 10:38:24 AM »
Nice finding.

One question about this one:

Can the clock speed be pushed even further?

I have no idea. Feel free to play with these registers, run the benchmarks and report.


How is this in the other cams, like the 6d. I've always thought that UHS-I, 50 MByte/s (SDR50) was the limit here ?
Or is there still a small chance that it can reach UHS-I, 104 MByte/s (SDR104) ?

18
Raw Video / Re: Artefacts on shooting RAW video
« on: June 01, 2017, 09:39:35 AM »
This is normal for all camera's except the 5d3
This is color aliasing due the line skipping sensor readout.
Buying an anti-aliasing filter is one solution.

But this can also be fixed (most of the times) with software.

For best detailed results, you should checkout the raw editor RawTherapee, it's free/open source.
It's a raw photo editor and has multiple options for debayering, in my opinion the LMMSE debayering works best for lineskipping raw video files from magic lantern.

Check out the RawTherapee workflow
http://www.youtube.com/watch?v=MweH3RAssXs
www.RawTherapee.com

For a quicker workflow for getting rid of all those colored speckles, you could separate the video file in Luma and chroma channel and do a blur effect on the chroma channel. This can be done in many video editors, also in the free version of Blackmagic DaVinci Resolve software.
In Resolve, change colormode on a node to LAB and disable the L(uma) channel, now do a blur effect on the same node.

Also, the colored speckles turn up more with wide angle lenses, and supersharp lens settings like from 2 stops closed down diafragma (f8 and f11).
So, shooting with diafragma wide open can help a little, just as closing down to f16 or f22, the lens is less sharp at minimum and maximum diafragma.
That said, I shoot a lot of video with the Canon 6D and the sharp 35mm f2.0 IS and use it a lot at f8 and f11, and all color aliasing can be removed with RawTherapee.

19
General Chat / Re: C200 RAW 4K internal
« on: May 31, 2017, 11:08:25 AM »
Canon is reading these forums and get's their inspiration from here  ;D

Raw cinema light....sounds like magic lantern compressed raw.
10 bit and 12 bit recording options, nice multiple bit options, where's the 14 bit option Canon  :P

Must say the word affordable is subjective  :-\


20
Camera-specific discussion / Re: Canon 6D
« on: May 17, 2017, 09:11:03 AM »
Internal GPS in the 6d is known for battery drain, even when camera is turned off.
So check if GPS is off.

21
Share Your Videos / Re: 6K raw video 5D Mark III Magic Lantern
« on: May 15, 2017, 09:51:57 PM »
Finally, I was waiting for the first one to use twixtor with full resolution raw video :D
Watched it on my mobile, so small screen, but the motion looks really good, natural. There was only one scene with a fast moving person who was missed by twixtor ;D

Thumbs up for the idea 8) and looks really usefull


22
Camera-specific discussion / Re: Canon 6D
« on: May 08, 2017, 09:53:21 PM »
No, you need to set the right settings in the canon video menu to get normal(not stretched) looking video.

Somewhere in the canon camera menu you can choose between 1080 and 720 resolution.
So this setting is not in the magic lantern menu.
Choose one of the 1080 settings. If you choose 720p setting your ML videos will look stretched.

23
Camera-specific discussion / Re: Canon 6D
« on: May 08, 2017, 07:18:54 PM »
For continuous recording you're limited to about 1280x720, that is in the normal magic lantern version for 6d.
But if you look further on the download page, you can see the link "experiments"
On the experiments page you'll find a magic lantern version for the 6d that gives you the option to record in either 10, 12 or 14 bit.

When choosing for 10 bit, you can probably get continuous recording at 1440 x 810 resolution.

But the 10/12 bit recording is rather new and not all home made post process software can handle the 10/12 bit MLV files.

24
Camera-specific discussion / Re: Canon 6D
« on: May 08, 2017, 07:13:42 PM »
@strongenough

Looks like you have the camera in 720p50fps mode and not in 1080p25fps.
Look in canon menu.
This has nothing to do with ML.

If the camera is in 720p50fps mode, the picture has to be unsqueezed by about 1.60 vertical to get right aspect ratio, Canon is skipping some lines here to achieve the 50fps read out.
Once you've set you camera to 1080p25fps in Canon menu, you're getting normal resolutions in ML raw video mode  8)

25
If you used compressed raw, the MLV files are always smaller. The dng files that are made by MLV_dump are not compressed, so bigger.
And as far as I know, the output in dng from MLV_dump is always in 14 bit.
So you could have a compressed 12 bit MLV file, but the dng's that come out mlv_dump are uncompressed 14 bit.

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