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Adobe Lightroom Q&A
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changing highlight clipping
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Topic: changing highlight clipping (Read 2414 times)
Mathew Zucker
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Posts: 20
changing highlight clipping
«
on:
January 25, 2009, 09:53:45 pm »
Hello
How do I change the highlight clipping point from 100% to, 247, 247, 247... ? I dont know
that percentage
How do I change the RGB readout form percentages to the older 0-255 scale?
Thank you
Mathew Zucker
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Nat Coalson
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Posts: 195
changing highlight clipping
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Reply #1 on:
January 25, 2009, 11:34:08 pm »
Mathew-
You can lower your "white point" values using the Exposure slider (drag it to the left). If there are pure white areas you need to use Recovery to move them away from 100%.
You can't change the percentage readouts. Lightroom's internal processing is not based on the 0-255 scale, which is 8-bit. Lightroom is based on a 16-bit color model, and the numeric values in 16-bit color are not very useful for editing because they are so long.
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Last Edit: January 25, 2009, 11:36:49 pm by Nat Coalson
»
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Nathaniel Coalson
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Mathew Zucker
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Posts: 20
changing highlight clipping
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Reply #2 on:
January 26, 2009, 10:23:15 am »
Thank you. I was hoping to use highlight clipping to show areas that are above 247 so I can see what goes to white in cmyk.
What are the RGB percentages for 247,247,247? Or, better, how do I calculate this myself?
Thanks!
Mathew Zucker
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Mathew Zucker
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Posts: 20
changing highlight clipping
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Reply #3 on:
January 26, 2009, 01:34:37 pm »
Quote from: John Schweikert
RGB number/255 = x/100 = RGB%
Perfect! Thanks! ~m
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changing highlight clipping
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