Isnt there a pdlog 685 setting still in red? But it would have change with redlog and color space if it was going to change at all I suspect. (Maybe) On Apr 29, 2014 1:07 PM, "Schneider, Abraham" <[email protected]> wrote:
> You're suggesting 'RedlogFilm' in the RED settings, right? > > Doing this and using a separate colorspace to do the Log2Lin gives similar > values than using the Read colorspace. My maximum value in the image is > lower than 5 compared to the > 54 with an Alexa image. > > Am 29.04.2014 um 18:17 schrieb Randy Little: > > > What happens if you do pdlog in red settings and then use a colorspace > node to do loglin. Read node loglin does weird things. Colorspace node > seems to work better. > > > > On Apr 29, 2014 11:43 AM, "Neil Rögnvaldr Scholes" <[email protected]> > wrote: > > Ha - this is interesting i don't know the answer but i do know a good > DP who hates RED for exactly it inability to retain highlights. > > > > > > Neil Rögnvaldr Scholes > > > > www.neilscholes.com > > > > On 29/04/14 16:33, Schneider, Abraham wrote: > > Thanks! > > > > I assumed all this. Just wanted to make sure there is no mistake in > doing one specific way. > > > > My main question is: is it true that RED cameras can only > deliver/capture highlights that are way darker then what the Alexa does? So > in my example, a maximum value of around 4 from the RED would be more than > 3 stops less than the Alexa with it's value of 54 (linear floating values > measured in Nuke). > > > > So the provocative question would be: is RED really that much worse than > the Alexa? > > > > Abraham > > > > > > Am 29.04.2014 um 17:10 schrieb Simon Björk: > > > > Some info on Red footage an it's curves: > > > > - Half Float Linear is the correct linear curve. The one that says > Linear is scaled/offset to be between 0-1. > > - RedLogFilm is a Cineon curve. By applying a standard log2lin > operation, the result is identical to Half Float Linear. > > - Both Half Float Linear and a linearized RedLogFilm will produce values > below zero. You can avoid this by converting to PLogLin instead, or just > bring up the values with a standard Add node. > > - Rendering RedlogFilm or linear EXRs from RedCineX will produce > identical result as importing the R3D directly in Nuke. > > - By rendering out an ACES file from RedCineX you will get a larger > color gammut, but you will not get any more information in the black/white > point. > > > > To sum up: > > > > If the values are clipped when using Half Float Linear in Nuke, you will > not get any more information by applying different settings or going to a > different application. > > > > Best regards, > > Simon > > > > > > 2014-04-29 16:20 GMT+02:00 Schneider, Abraham <[email protected]>: > > Hi there! > > > > As we're more used to Alexa footage here, I just wanted to ask about > RED, as I have some footage here that let's me wonder about the > capabilities of the RED camera: > > > > I have some shots with fire, sun, lamps, etc. in my images. Shot with > EPIC-X. When importing them into Nuke and linearizing them, I always see > that these bright highlights are clipping at around a value of 3 to 4 > (depending on the channel). > > > > This happens, no matter how I treat the footage: > > - importing the original R3D file in Nuke and use "half float linear" as > gamma space and 'linear' as the Read colorspace > > - importing the original R3D file in Nuke and use "RedlogFilm" as gamma > space and 'cineon' (or PlogLin) as the Read colorspace > > - converting the R3D in RedCine X Pro to DPX with RedlogFilm and > importing with 'cineon' or 'PlogLin' > > - converting the R3D in RedCine X Pro to EXR with ACES and importing > with 'linear' > > > > Having similar takes shot with the Alexa as AlexaLogC, bright highlights > will clip at a value of 54! > > > > I don't want to start a 'war' Alexa vs. RED, but just wanted to know if > this really is 'normal', so the RED will not deliver higher values, or if > there is something wrong/strange is going on here. > > > > Thanks for your help, > > > > Abraham > > > > > > Abraham Schneider > > Head of VFX pipeline / VFX Supervisor > > > > > > Türkenstr. 89, 80799 München / > > Phone +49 89 3809-1096 > > > > EMail [email protected] > > > > Visit us on Facebook!________________________________ > > > > > > ARRI Film & TV Services GmbH > > Sitz: München Registergericht: Amtsgericht München > > Handelsregisternummer: HRB 69396 > > Geschäftsführer: Helge Jürgens, Josef Reidinger > > _______________________________________________ > > Nuke-users mailing list > > [email protected], http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > _______________________________________________ > > Nuke-users mailing list > > [email protected], http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > > Nuke-users mailing list > > [email protected], http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > > > > > _______________________________________________ > > Nuke-users mailing list > > [email protected], http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > > Nuke-users mailing list > > [email protected], http://forums.thefoundry.co.uk/ > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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