Generate Solid - Can't get pure White

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Kyle R Lancaster

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Generate Solid - Can't get pure White

PostThu Aug 16, 2018 3:00 pm

I'm having a tough time generating a plain white solid to throw underneath footage for the purpose of fading to white. For the life of me I can't figure out why my white solid looks gray

I thought it might be a node that was doing it, but I started a completely fresh project and imported a white image made in illustrator to compare against a generated white solid (see attached image)

Is it a color space or color management setting I have that is affecting the solid?

Feel like such a n00b, thanks for any advice!
Attachments
Screen Shot 2018-08-16 at 7.52.21 AM.png
Generate Solid cropped to the left, white PNG on the right
Screen Shot 2018-08-16 at 7.52.21 AM.png (657.7 KiB) Viewed 1542 times
KYLE R LANCASTER
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xunile

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Re: Generate Solid - Can't get pure White

PostThu Aug 16, 2018 5:37 pm

Can you click on the color picker box and get a screenshot of the settings for the color.
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Kyle R Lancaster

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Re: Generate Solid - Can't get pure White

PostThu Aug 16, 2018 5:55 pm

xunile wrote:Can you click on the color picker box and get a screenshot of the settings for the color.


Here is after I selected "FFFFFF"
Screen Shot 2018-08-16 at 10.48.04 AM.png
FFFFFF selected in color picker
Screen Shot 2018-08-16 at 10.48.04 AM.png (675.78 KiB) Viewed 1510 times


interesting phenomenon here: if I selected the eyedropper and click the solid in the timeline viewer, it results in a gray. If I continuously do this (color pick the solid in the viewer) it keeps getting darker and greener (see image)
Screen Shot 2018-08-16 at 10.53.17 AM.png
after repeatedly eyedrop-picking the color in the viewer
Screen Shot 2018-08-16 at 10.53.17 AM.png (625.24 KiB) Viewed 1510 times
KYLE R LANCASTER
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easycass

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Re: Generate Solid - Can't get pure White

PostThu Aug 16, 2018 5:57 pm

Just to let you know, I repeated the same thing, and yes, mine comes out white as expected, so I guess we might be able to rule out a bug.

Good luck with finding a solution. Just to narrow down what the issue might be, have you tried other colours, black, pure red, green, and checked their RGB codes as per the suggestion above?
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xunile

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Re: Generate Solid - Can't get pure White

PostThu Aug 16, 2018 6:12 pm

Maybe check the project settings, color management settings.
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Cary Knoop

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Re: Generate Solid - Can't get pure White

PostThu Aug 16, 2018 6:23 pm

xunile wrote:Maybe check the project settings, color management settings.

Exactly, I wonder if the Luminance mapping is set incorrectly.
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Kyle R Lancaster

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Re: Generate Solid - Can't get pure White

PostThu Aug 16, 2018 6:28 pm

easycass wrote:Just to let you know, I repeated the same thing, and yes, mine comes out white as expected, so I guess we might be able to rule out a bug.

Good luck with finding a solution. Just to narrow down what the issue might be, have you tried other colours, black, pure red, green, and checked their RGB codes as per the suggestion above?


Thanks for your advice!

xunile wrote:Maybe check the project settings, color management settings.


I've been working in a RED IPP2 workflow with the attached settings. I actually just noticed when I switch around the Color Science back to DaVinci YRGB or to ACES it turns to pure white. Seems to be Timeline to Output Gamut Mapping, specifically the Highlight Roll Off. I get pure white if I set that to 'None'

Screen Shot 2018-08-16 at 11.25.43 AM.png
Screen Shot 2018-08-16 at 11.25.43 AM.png (219.21 KiB) Viewed 1495 times


Is that behavior expected? I'm inexperienced as a colorist but would love a layman's explanation if it's something super simple

Thanks!
KYLE R LANCASTER
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Cary Knoop

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Re: Generate Solid - Can't get pure White

PostFri Aug 17, 2018 3:11 am

Since you are using Rec.709 SDR as the output color space the question is why would you want to use "Timeline to Output Tone Mapping"?
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Kyle R Lancaster

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Re: Generate Solid - Can't get pure White

PostFri Aug 17, 2018 5:26 am

Honestly I'm still learning, combing through the manual and reading Alexis Van Hurkman's handbook. So the main reason I have those settings is because Peter recommended them here:

viewtopic.php?f=32&t=74230
KYLE R LANCASTER
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Marc Wielage

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Re: Generate Solid - Can't get pure White

PostFri Aug 17, 2018 6:09 am

Cary Knoop wrote:Since you are using Rec.709 SDR as the output color space the question is why would you want to use "Timeline to Output Tone Mapping"?

I think keeping everything in regular Rec709 is a very wise choice for 99% of most users. I think the risk of using other color spaces is the risk of getting things screwed up... especially test patterns.
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