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Topics - johannsebastianbach

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1
Raw Video / Softer Shutter Approach
« on: February 27, 2019, 10:18:03 AM »
Hello,

I read trough http://acoutts.com/a1ex/dual_iso.pdf and was wondering if it is technically possible to alternate ISO within one frame. If you shoot with a exposure time of 1/50 of a second, could you tweak the CMOS registers dynamically to have the first and last 1/10 of a second to be e.g. in ISO 100 and the in between 1/30 of a second in the ISO 400 mode, or is it only can be set before each frame? This way you could change the characteristics of the motion blur and kind of emulate the "tessive time filter" for a softer shutter look.


EDIT: Oh gosh, I just realized how stupid this post was on so many levels. :D

2
Hardware and Accessories / External controls 5D3+Gimbal
« on: February 01, 2019, 04:31:00 AM »
Hi there!

I wanted to ask if by now there is a good solution to change aperture/iso etc. if you have your 5D3 on a gimbal. I have a ronin-s with tho handle setup so it’s always a battle to change the settings. Maybe with a wire or wireless? The hdmi port is already plugged in for an ext. monitor but the mini-usb would be free. Thanks!!

3
Just found this gem of LOPTA FILM


And some making of


I have read that the 16 TB ML footage was mixed with some red (only the night-bar scenes) and dji but it looks awesomely good ☺️

4
Raw Video / Rolling Shutter 1080p vs 720p modes
« on: December 25, 2017, 10:11:30 PM »
Hi guys,

I was wondering, if there is a difference between rolling shutter in the squeezed mode?

In 1920x818 25p Magic Lantern shows me a rolling shutter of 16,5 μs/line but in the squeezed 1920x490 25p I have 19 μs/line.

If I calculate 818*16,5/1000 = 13,5 ms for complete readout.
But what about the slowmo, do I count with again 818*19/1000 cause the sensor is read out entirely or does the sensor read ONLY 490 lines? Can't imagine, since the rolling shutter is still visible on first sight. Are the 16,5 and 19 μs/line the factors I should consider regarding rolling shutter?

Did anybody manage to drastically speed up the readout process so far?

5
Raw Video / pink sun?
« on: March 31, 2017, 02:03:14 AM »
Hello  :)

I was shooting outside on a bright day and caught the sun for a second. The DNGs are giving me pink in the overexposed areas… I've searched around here but couldn't find any solution better than tracking. Any solutions?



https://www.dropbox.com/s/17zcwi0gadqw2su/M25-1824MLV_1_2017-03-25_0001_C0000_002123.dng?dl=0

using one of the march versions of magiclantern-Nightly.5D3113.zip - tried many workflows and mlv->dng converters, the pink dot stays.

6
Hello dear community.

I was shooting in Japan and had all my Data on a external HFS+ WD 2TB which I bought there. I KNOW… :-[  I normally ALWAYS back up two/three times at least until the Project is done but I only had this 2TB with me and since it was just for myself without a client I trusted the fresh HDD. The Footage converted on my old mac for like a week and I got about 100+ GB of ProRes files out of the MLV's.

Then I had some other Files copied out of the HDD and the copy task failed. The HDD didn't react on anything and, of course, I tried to repair the drive with Disk Utility but it didn't work. Disk Warrior couldn't help too, but OSX somehow connected to the drive in a special mode (I forgot the term) and the files are accessible, but VERY VERY slow 10-50 kb/s! Even just to show files in folders is very slow. So it is theoretically possible to get the files, but it would take about a year to do so.

My Idea was now to somehow extract the previews of the files, or all the beginning frames "*_000000.dng" of the 300 MLV's to see which clips are the most important and just leave the mac on for a couple of months to get at least something out for my demo-reel with which I intend to apply to Film-Univercity in May. MLVFS indexes the MLV Folder but as soon I want to search for frames containing the name "000000" it shows maximum one file, then MLVFS crashes and throws the virtual volume off.

Might there be a way with the ProRes Files? They don't need MLVFS but Finder or Bridge alone don't give me any Thumbnails. I searched the net for solutions but there was nothing possible. Giving it to a Data Rescue Firm is not in my budget too. Does somebody have a Idea what I should do (besides Back up more often in the future) :D to get out the Thumbnails or even repair the disk?

I'd appreciate any help!

7
General Chat / Let's talk real about cinema-look…
« on: July 21, 2016, 01:28:45 AM »
Hey there,

so even if you use all the film-look techniques, 24fps, 1/48 shutter, shallow depth of field, stabilize camera movement, light up professionally, cinemascope aspect ratio, have good actors, color grade perfectly and do the framing and everything else right. I have the feeling that with Magic Lantern RAW or even a Blackmagic you still can't get footage to look like it would be from a high budget film production or could be shown as a movie in movie theatres. Is there anything else, that could be done or I forgot?

At this point I am at the end of my knowledge and can't explain what a Red Epic or a Arri Alexa does differently. I guess it has something to do with how their sensors do interprets motion, I can feel it, but I can't explain why it looks so differently. At least I didn't see any video from ML/BM close enough, that I wouldn't spot the difference to a DSLR. Any link to clips to prove me wrong would be awesome.

Thanks in advance.

(Red Epic Dragon)


8
Raw Video / MLV - long clips turning out to be empty.
« on: July 07, 2016, 01:56:17 PM »
Hey guys, first of all, great job with the pink frames issue. My using of MLV raw is increasing every day and I'm really happy to shoot :)

One issue though. During the last couple of shoots I'm finding all my longer clips of some minutes are broken on the card. MLV play module is not playing it, it shows indexing 10/10 but doesn't do anything and the files on the card are M04-1615.MLV aswell as M04-1615.M00-M08 are only a few bytes big. It is perticurarly unfortunate, because the longer clips were the most important ones. Does anybody has the same problems? 5DmkIII, Nightly.2016May16.5D3113

my card is formatted with the camera and exfat feature is not activated.
reserve card space is ON

1kb files:
https://www.dropbox.com/sh/xt0ipksituivvmx/AACNVL18DZweq19M4L5VGz2ra?dl=0

thanks in advance!

9
MLV filename with 'MYYYY-MM-DD-' instead of only 'MDD-'?
Is it possible or does the longer filename make a problem?

It would make more sense while shooting over a longer period of time.

Thank's in advance!

10
I just realised that Global Draw is disabled in 60fps mode when a ext. Monitor is plugged in via HDMI, was it always like that and I missed this fact? Thanks in advance!!

11
Share Your Videos / Why not to have a date + ML-RAW? ;)
« on: April 04, 2016, 02:06:08 PM »


What we did is recording the sound first, then time-strech it up to 62,5%. Then if filmed with playback at 40FPS (fastest possible for the singer :) ) and slow it down in post to 25FPS it would still be in slow motion, but the lips are synced. 5Dm3, MLV-Lite(+Focus Peak,RAW Zebras). Hand- held and focused.

I would be happy to hear some constructive feedback from you guys!

WHAT CAN BE DONE TO MAKE THIS AWFUL YOUTUBE QUALITY BETTER? (Besides Vimeo)

12
Hello,

just wanted to tell you about my experiences with the new VS-2 FineHD (about 340€ inc. shipping) and Magic Lantern. I ordered it because it has FullHD and also focus Peaking to relieve some CPU off the 5D. The monitor's quality itself is very good. Very light and good looking. I hooked it up with the 5DmkIII on the February-1.1.3 nightly. Global Draw layers work, DIGIC Peaking doesn't. The HDMI-Out resolution is not full HD but has black bars which is still OK-ish but I noticed a slightly higher latency in comparison with the internal monitor.

Updated to 1.2.3 and tried it out with both, mirroring mode and clean HDMI out. Now we're talking. The Full HDMI on the 7inch Monitor (high PixelPerInch) looks really good. But unfortunately the latency is still there. It is actually short about half of a second but it is enough to confuse you while moving the camera and especially focus pulling. Not usable for me.



1 · Is latency a general problem with the Canon HDMI-out or does it have something to do with the Vs-2? I never had the chance to try out a more sophisticated monitor. Do you experience it with other monitors too?


2 · btw, I also had the impression that the internal monitor became slower too in 1920-mode after the update to 1.2.3, is this a thing?


3 · Does DIGIC- Peaking works on other monitors or generally only in the internal one? I could imagine to use a cheaper SD monitor with sharpness+7 and DIgic Peaking Slightly sharper. This is almost as good, as a focus peaker:




:)

13
Tutorials and Creative Uses / Remote follow focus.
« on: February 05, 2016, 08:06:00 AM »
I have to admit, I didn't test it yet (but I am guessing it could work)

So the ML follow focus option works good, but you obviously can't use it if you have the camera on a shoulder-rig or steadycam. How about a cheap remote control which has the up/down/left/right buttons (I remember you could control focus on my old Powershot Pro1 natively with the included remote control) and you could use follow focus even in action shots.

It is basically a Aputure Dec ( but with the advantage of no lens controller adapter needed. ;)


Maybe somebody worked this already out? I am going to search, try soon and report.

14
Hello everybody.

The ML Focus Peak option is totally fine but my problem with Global Draw is, that it often cause me pink corrupted frames if I, for example, do Slow Motion stuff (probably because it is using the CPU and the camera doesn’t have enough resources to write down the Raw data on the card?). I am normally using the DIGIC peaking “slightly sharper” mode and it helps focusing during the recording with global draw off (light on the CPU).

I was experimenting with picture styles for the best liveview preview option and found out, that when you use DIGIC slightly sharper additionally to Picture Style “sharpen +7” it over-sharpens and actually defines the edges like a focus peaker would do. Of course, the effect is not as strong as ML peaker, but if you want/need to turn off Global Draw during recording to ease out the CPU, try it out.










15
General Development / Higher grey/hacked preview frequency?
« on: January 06, 2016, 10:41:36 AM »
Hello  :)

Is there a way to increase the frequency of the grey/hacked preview? I would like to shoot in 3x zoom mode in the right framing. The grey/hacked preview is super, but way to slow for even a slight focusing or hand holding the camera. Is there a way to accelerate preview to 24 fps by just changing a value (even if it means a shorter record time), or is it just the max. speed the camera can do?
5DmkIII dec.113

Thanks in advance!  :-*

16
Post-processing Workflow / MLVFS+AE vs. MLRAWViewer workflow.
« on: December 22, 2015, 02:03:41 AM »
Hello everyone!

I'm new to the scene and after spending some long nights with Magic Lantern I believe magic lantern turned out really good. Everything works good and the raw video possibilities and image quality are amazing. There is one problem though.. The biggest stumbling block is the extended workflow of ML. With other cinema cameras you can shoot LOG ProRes and it's ready to go, you can spend your time being creative in cutting.

So one way (without doubling your footage size) I see to get your footage ready is to
MLV->
MLVS(really "on the fly" MLV to CDNG converter)->
AE+AFX Script+ACR+VisionLOG->
ProRes4444(XQ?)
cons: -you need adobe, -one minute 50fps needs 30minutes on my computer.

And then I also see the option to use MLRAWViewer. This one opens up my MLV, I can look at in realtime even on my 2008 MacBook. I can already set In- and Out-points to save rendering time and space. I can already set the WB, exposure, especially the LOG-C and batch render my files (takes maybe 2-3 minutes). But it has some bugs and disadvantages: -black pixel line on the bottom. -doesnt automatically stretch my slowmotion footage out to the right aspect ratio which brings a extra rendering stage.

These things matter so much, if you have a terabyte of footage to work with. So the second option absolutely seems like the right thing to do or to develop on. My question is, what did I miss, that people don't?

Thank's in advance!

17
Post-processing Workflow / Sharpness/Noise reduction in ACR workflow
« on: December 22, 2015, 01:30:26 AM »
Hello everyone,

one thing came to my attention is, that in all workflow tutorials posted here in forum I never seen anybody touch the Sharpness/Noise reduction controller.

In my ACR for example a little color de-noise is activated by default. So I don't really know what to do- how do these slider behave with quality and grading usability? Should one turn it completely off and do color de-noise at a different stage later or leave it on. If leave it on, why not push it more?  ::) :)

18
Share Your Videos / Production in Frankfurt, Germany.
« on: November 06, 2015, 10:24:46 PM »




Hey Guys,
first of all, thanks to all of you for this great community.

Used:
Sigma 8-16mm F4,5-5,6 DC HSM
Canon EF 28mm F1,8 USM
3x Sachtler Spotlights
DSLR-Rig
Glass viewfinder

Workflow:
Firmware: 1.1.3, OSX 10.9.5
Open MLRAW ->
MLVFS ->
Opening the sequences in AE ->
Using the AE Plugin to stretch back the slomo shots to the right aspect ratio ->
color correction with Adobe Camera Raw ->
exporting as ProRes HQ ->
cutting and -> color grading using free luts and manual changes

The project used 400 gb of data and it needed four days on my old MacBook late 2008 to render out the clips for cutting.

The whole clip has been shot in RAW and to be honest, it was not worth it. In General it is amazing, what you can get out of the picture, but in my opinion, after trying out a blackmagic and using ProRes, I think the usability of the clips overcomes the +10% quality advantage of RAW. I had A LOT of pink frames in all possible configurations. Didn't try out 1.2.3 though, because I wanted to use continuous 60p. I just cut out the corrupted frames and you don't pay attention to it so much. Maybe for the key- or difficult shots I would use RAW again.  :)

Please give feedback   :P









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