try this:
Use a colour convert node but before that use a grade to set black to 0 and
white to white.
Then reverse the process for the output. Dont use the Read's convert,
to covert blacks and white set
blackpoint 16/256
whitepoint 235/256
it might be 16/255 and 235/255 but I think it the above.
To reverse use the reverse button in the grade or add these values to lift/gain
instead
Howard
>________________________________
> From: Ed Mendez <[email protected]>
>To: nuke usergroup <[email protected]>
>Sent: Wednesday, 4 January 2012, 20:13
>Subject: [Nuke-users] Video Range vs Full Range on Rec709 Files?
>
>
>
>We are running into a slight offset in color/levels between ProRes422HQ
>fileson different systems. Resolve, Smoke, and Nuke. Just wondering if anyone
>has run into a similar issue? I don't believe it is a .mov gamma flag thing,
>but I could be wrong...
>
>We rendered some Rec709 ProRes422HQ files out of Resolve to DPX – no color
>correction added. When the resulting DPX sequence was brought back into
>Resolve and compared to the original ProRes file – everything (colors/levels)
>matched nicely. They also matched when compared in Smoke. However, when the
>ProRes file was compared to the DPX files in NUKE the ProRes file looks like
>it is being read as video range while the DPX sequence is being read as full
>range. Consequently the blacks are lifted and the whites dropped when looking
>at the DPX sequence. The read nodes for each the ProRes and DPX's are both
>set to Rec709 as is the display. Equally there is a similar offset when
>setting the read nodes to any of the other colorspaces as well...
>
>To add to the matter – when the same ProRes file is rendered out of Nuke via
>Rec709 in a write node, the resulting DPX sequence will match the ProRes when
>viewing back in Nuke…
>
>Is there any way to tell Nuke to read a file as full range or video range? Or
>is the another way to address this issue?
>
>Thanks,
>ed
>
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