Are People really using COLOR to grade their DPX Files?

[Cüneyt Kaya]

Stu you know one zillion times more then me...

will you write a RED Rebel guide?

And can you point me to the right direction in your blog where you describe
VFX in AE in relation to Cplorspaceworkflows( lin/gamma encoded/log ) and exporting as DPX log Files...

If you have covered these topic for sure.

thanks

 

[Cüneyt Kaya]

1. log (for filmoutput)
2. video gamma corrected linear
3. linear (gamma 1.0)

Linear is linear. Gamma 1.0. Anything else is not linear. Nubmer 3 above should be "Gamma encoded," pure and simple.
-Stu

why should number three be "gamma encoded"....number 3 is linear(gamma 1.0)?

or do you mean nr. 2

 

[Stu Maschwitz]

why should number three be "gamma encoded"....number 3 is linear(gamma 1.0)?

or do you mean nr. 2

Oops, typo. Meant #2, thanks! I've gone back and fixed it.

-Stu

 

[Ido Karilla]

calibrating my room with a lab?

calibrating my room with a lab?

I intend to grade 10 bit log DPX's with color. I am working on a jvc studio reference LCD monitor (Israeli budgets). I inted to calibrate it with cinespace and imply 3DLUTs when I will finaly get to understand the how and why. mean wile I calibrated my monitors with the oneeyedisplay 2 and send a first test to our local LAB. Our Lab makes only the negative with the Difinity and sends it to print in an other Lab ( this time somewere in London).
I did not make a lot of changes to the shots, just calibrated the luma curve with a typical s curve; so that the blacks reach the ground and the whites wont clip, and a bit of sharpening.
Imust say I was very impressed from the potential of the image but very disapointed with the overall outcome:
1. the blacks where lifted considerably.
2. There was a blue noise all over the blacks.
3. There was an overall to much grain/noise.
4. The image was pale, not alive.

can you expirienced pepole guide me on what should I consider on my next test to achive optimal results.

Thanks.

 

[Stu Maschwitz]

1. the blacks where lifted considerably.
2. There was a blue noise all over the blacks.
3. There was an overall to much grain/noise.
4. The image was pale, not alive.

That sounds like a good description of a log image. Film scans in Cineon log format look much like what you describe above. Then you pop that cineSpace LUT on them and boom, nice contrasty film, with a soft s-curve and purty colors.

In other words, you'll probably find that you want to skip the s-curve in RED Alert and simply export nice clean log images to grade under that LUT.

-Stu

 

[Ido Karilla]

Lab calibration novice questions.

Lab calibration novice questions.

Stu, thanks for the reply.
I need to get to the bottom of this so some more questions if you do not mind.

1. The Lut I will imply will make the image look different on my monitor. I will grade it with the implied LUT and get a better result. but what about the scopes? I did take the blaks down, does the implementation of a LUT make me take them down even more?
2. How do I take into account the two emultions participating for the negative and for the positive, grain point of view?
3. I have tried exporting DPX as well as AJA KONA 10 bit uncompressed (lin and log) QT's as grading matirial. What would be the differnce in terms of calibration, if any, using each one of them for grading?

Thanks again.

Ido.

 

[Stu Maschwitz]

You will get to the bottom of it quicker than you think when you get your LUTs in place. Your friends at RSR and at your filmout facility will be able to answer those questions.

-Stu

 

[Ido Karilla]

Resources?

Resources?

Thanks again.
I will start playing with those LUT's and hope for the best, from where I stand it looks like a tuff climb. Can you point on a comprehensive book or other resource on this subject?

Thank you for sharing your knowledge, excuse my ignorance, I come from a very different background to this realm.


Ido.

 

[Evangelos Achillopoulos]

Free film out with custom LUTs for Color

Free film out with custom LUTs for Color

Karilla if you read back in that thread, there is a free film out test offering from us, with all the consulting needed to do the custom LUTs and calibrate your display device and still there is one position open

The offering is for 1 minute film out including all stocks plus answer print, with custom LUT’s created for your setup specifically. All that with free consulting in order to do the full cycle test with WYSIWYG for film out. Just send me an email to lakis@motionfx.gr.

There are all ready another three studios that are registered for this free ride, one position is still empty…