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Filmstream LUT?


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#1 Gavin Greenwalt

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Posted 21 June 2007 - 04:07 PM

Is there a "standard" LUT to correct for the filmstream cast in post or is it pretty shot specific?

Maybe a green gamma/lift/gain setting which compensates for color shift?

Edited by Gavin Greenwalt, 21 June 2007 - 04:08 PM.

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#2 Phil Rhodes

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Posted 21 June 2007 - 04:22 PM

There is, but it depends on a lot of other things. Most significantly, you need to know whether you want to anti-log it at the same time, depending what else you're going to be doing with it.

Also depends what format you want it in.

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#3 Michael Collier

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Posted 21 June 2007 - 05:34 PM

There are fast LUTs avalible for whiteballance. Common ones would be daylight and tungsten (you'd probably use tungsten exclusivley unless you don't use an 85b outside.)

from there you can add your custom look to it. All light being the same, those should do what your looking to do (remove the green and make it 'normal')
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#4 Mike Brennan

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Posted 26 July 2007 - 04:17 PM

There are fast LUTs avalible for whiteballance. Common ones would be daylight and tungsten (you'd probably use tungsten exclusivley unless you don't use an 85b outside.)

from there you can add your custom look to it. All light being the same, those should do what your looking to do (remove the green and make it 'normal')


When I shot with Viper and edited on an iQ the FIilmstream LUT built into the iQ was rubbish.
Ditto the LUT on the HDlink from Blackmagic (as of 6 months ago)



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#5 Phil Rhodes

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Posted 26 July 2007 - 10:31 PM

Rubbish in what way?

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#6 Gary McClurg

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Posted 02 August 2007 - 02:52 PM

Rubbish in what way?

Phil


Same here... I might be working a film that shot Viper... then coming on board to do a week of re-shooting, and then post... of course I don't know if they shot film stream or video stream... but if they did video... this is something I'd like to know as well.... my guess is they did video... for a reason that I can't go into...

Edited by Gary McClurg, 02 August 2007 - 02:53 PM.

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#7 Maarten Treurniet

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Posted 27 August 2007 - 11:19 AM

You can download a .txt lut that will do the anti-log from 10 bits to 12-bits linear on the thomson site. Then again what do you do with 12-bits linear since there is for example no Quicktime codec that does 12 bit RGB 4:4:4... see the attached pdf.

Maarten

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Abel Cine

Visual Products

Aerial Filmworks

Broadcast Solutions Inc