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Messages - bpv5P

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151
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Are you sure that the input is Cinelog-C or something similar?

I'm sure. In my test I gave rawtherapee the input, the loaded the DCP, fixed WB and exposure, and exported in TIF 16bit. Then imported on photoshop and gave it the lut.
Maybe if you decrease the cyan/blue light value by 40% it would be nice. Also, maybe decrease neutral saturation by -30%, and decrease overall saturation by 15%. Also less crushed shadows, upping the zone 3 by ~20%.

What is the software you're using to do it?


@GutterPump

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Im a big user of Koji Color LUTS

I have tested Koji too, too contrasted, not a big deal (personal opinion).

152
So, I've tested it and that's good. I think it's too contrasted and too saturated, but that's probably just a personal opinion.
I also compared it against other luts that emulate Ektar:


153
So, I tried Cinelog-C. It's great. I did a comparison between the VisionColor BMDfilm (the rebranded VisionLog, it seems), and the result was much better midtones and colors keep at full palette (on BMDfilm it seems that greens go to yellow).
This post is not some kind of attempt to astroturf, I'm just doing an honest feedback.

Now, can @Andy600 or any of you guys reading this answer me this question: how to correctly use ImpulZ luts on Cinelog? The LUTs embedded on Cinelog package works great, especially the "[CFL] Kodak Vision 2383 grade 0x", but I would like to have some of the ImpulZ LUTs. I've used many times the Kodak Kodak Vision3 50D 5203 (DP)_FPE while on H.264, but now on RAW I couldn't get the same colors.

Any tips? I use the LUTs from what camera/colorspace? And how about the difference between CIN, VS, FC and FPE?

Thanks in advance.

154
Share Your Videos / Re: Barcelona Hypertravel. Timelapse & Hyperlapse
« on: April 05, 2017, 11:13:06 AM »
Holy fuck, that's great! Good job.

155
General Development / Re: Hypothesis about HDR
« on: April 05, 2017, 11:09:44 AM »
Dual ISO is not the same. The image has half the resolution. It could generate FPN. If can make moire even worst. It has to suffer a interpolation to function.

The proposed solution would have the entire resolution, and could be processed with the ZeroNoise, which would result in better dynamic range and less noise (greater SNR).

You could compare still images: take a picture using dual iso. Then take other two pictures in the same place, but with different exposures.
Use cr2hdr to process the dual iso file. Then, use HDRMerge[1] to process the other two pictures. Open on some raw processor and see the results for yourself. Fewer noise, full resolution and better DR.

[1] https://jcelaya.github.io/hdrmerge/

156
Post-processing Workflow / Re: Any MLV to Blender workflows?
« on: April 05, 2017, 03:23:34 AM »
Are you talking about the video editing in Blender?
Well, MLV is just a bunch of raw files that then can be converted to some more command video format.

But Blender video editing seems to be a little... limited. Maybe Kdenlive or Natron would fit better.
I would suggest:

MLV > cr2hdr > Rawtherapee (with some Hald CLUT) > PNG sequence > ffmpeg to some lossless format > Kdenlive or Natron

157
Share Your Videos / Re: Canon 6D RAW 60 fps Slow Mo + Twixtor
« on: April 05, 2017, 03:17:48 AM »
Hey Melvin, good job. I like your video essays (seems to be quite inspired by Nerdwriter1), although I would suggest you go a bit beyond and start to talk about philosophy and/or science. I'd recommend you a yt channel called "Shots of Awe", it has some pretty good videos.

About your workflow, are you using ImpulZ? The greens and yellow seem to be approximated to the reds, which make it very "teal and orange" kind of coloration. I do like it, but (I don't know you guys), I'm getting a little sick of all this teal and orange thing. People should go beyond just two colors.

I really like this transition effect too.

158
Beautiful. Some scenes have a too dark shadows, but overall it's pretty great, especially the final time lapse (stars).
The music is good too, very moody. I would just suggest you do ETTR, to get some of the shadows back, and maybe a LUT for grading, if you like this kind of thing (but that's an artistic choice anyway)...

159
The picture is a crop from reality, as Roland Barthes would say. You probably should be experience those moments, instead of just take pictures of it. You memory of your loved ones is more important than show a picture on social media.

> thanks for nothing.

Nothing? a1ex, g3gg0 and other developers just changed the way we do low-budget movies after the development of Magic Lantern. Never before in history before ML we could get a $500 camera and get a solid quality from it. On ancient times $500 would just pay for a 30min 16mm film.
It's a community work, and you should not rely solely on it. Let me do a question: how much have you donated? How much do you help this community at all?
You should just leave or stop being such an idiot, please.

160
Share Your Videos / Re: Flowers. A Cinematic Montage
« on: April 05, 2017, 02:38:16 AM »
Good job. Is it sakura? Mono no aware.

161
General Development / Re: Hypothesis about HDR
« on: April 05, 2017, 02:35:18 AM »
Actually 600D can't do 48fps on a usable resolution, but I could try to get a MKIII just to test it.

162
General Development / Re: Hypothesis about HDR
« on: April 05, 2017, 02:04:44 AM »
Seems a interesting idea a1ex. I have no advanced programming skills to do it, but I can compile ML and do all necessary tests on 600D if you're willing to put some effort on it.
I think the adtg research is pretty interesting, but the DR and SNR enhancement would be minimal. On this ZeroNoise the enhancement would be pretty clear, I think. It may not be something you would use for everyday work, but that's certainly a great feature for people doing low-budget film.
Thanks for all the work.

163
Hey, just wanted to say thank you for supporting open source software... I'm trying to get a full FOSS workflow and, even if your software don't help on my specific workflow, I appreciate your work. Thank you.

164
The best result will probably be if you apply your noise reduction (if needed) first, then upscale to just after that start grading/sharpening.
But it will significantly increase the computational power.

165
The footage is underexposed or it's just your processing? Try AETTR module...

166
General Development / Hypothesis about HDR
« on: April 03, 2017, 05:27:32 AM »
Just as an hypothesis: now that some cameras can do 60fps on MLV, would it be possible to intercalate exposures between frames, kinda like the old HDR video feature?
This could be a interesting project, since the resulting footage could be processed using the ZeroNoise technique (using software like the HDRMerge - very slow, but still), to get a 24bit footage with better dynamic range and less noise... the footage would have a great SNR.

Now the problem I see is: on the old HDR feature, if I remember correctly, the ML used the ISO settings to get different exposures. That wouldn't be possible with ZeroNoise, since it uses something like noise avaraging[1] to get the noise pattern, from what I understand.
So, it would be needed to change the shutter speed or the lens aperture (for non-manual lenses - if that's even possible on ML). The first would generate ghost images in high speed objects and the letter would turn the feature to be useless for everyone using manual lenses.

Anyway, could be a interesting idea to some developer. Just wanted to share.


[1] http://www.cambridgeincolour.com/tutorials/image-averaging-noise.htm

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