Kona 3 DPX workflow

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Kona 3 DPX workflow

by Dado Valentic

on Jun 16, 2009 at 7:08:59 pm

I have just performed small test trying to figure out the best workflow.
I took Quick Time AJA 10bit RGB and converted it to DPX using QTtoDPX tool. Then I used the same DPX to create AJA 10bit RGB full range with DPXtoQT and I got different resulting image.
My original AJA RGB file looks different to AJA RGB created through roundtrip. My blacks and whites have shifted.
Anyone has any clue why this might be happeneing?

Thanks

Dado Valentic
colourst

Chief Colourist http://www.mytherapy.tv
Apple Certified Color Trainer

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Re: Kona 3 DPX workflow

by gary adcock

on Jun 17, 2009 at 10:01:29 am

[Dado Valentic] "ook Quick Time AJA 10bit RGB and converted it to DPX using QTtoDPX tool. Then I used the same DPX to create AJA 10bit RGB full range with DPXtoQT and I got different resulting image. "

that would be correct.

one was full range (0-1024) vs one handling as SMPTE (64-940)

There is also a know QT issue when handing off data between certain versions of AE and the Aja codec that requires that you remove the legacy "AJA 2Vuy" Codec from the QT library.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

Check out
http://www.aja.com/kiprotour/

Inside look at the IoHD
http://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

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