Wednesday, November 27, 2013

[Avid-L2] RE: ARRI Alexa LCC Look Files quagmire

 

As long as they are consistent and stay with the LCC "look", you don't need to do anything. No other LUTs required. Simply color correct if you want to, like normal. It's simply a low contrast profile.


There is no secret to any of this. Even is they had shot Log-C, it is simply a gamma profile. You are still working with it in Rec 709 color space if you in an NLE. A Log-C-to-Rec-709 LUT is nothing other than an inverse curve to offset the log curve.


- Oliver 



---In Avid-L2@yahoogroups.com, <ph@...> wrote:

Starting a project shot on Alexa. There was a slight communication problem with the camera department but it looks that they're not shooting with a Log-C but with with Look Files and LCC. From what I understand, it means the camera is recording directly into REC709.


The DiT is supposed to give us MXF files he creates with Resolve -in DNxHD36 (or DNxHD115 if it's worth the bigger files)- for offline editing. We read most of the white papers out there, and whilst there's a lot of info on how to get it right under normal circumstances and some good step-by-step litterature, it's always about Alexa Log-C to REC709. So we're a bit concerned because when we asked for Ycrbr REC709, he said he can't do anything else than RGB. It's rather confusing because LCC seems to be already REC709. If someone can shed some light on that workflow, it would be great because we don't even know what project settings should be used - apart from 1080p/24fps - the color space we should use is a mystery.


Sorry for those who also saw that post on the Avid forum. Figured there might be more film experts here!

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