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Set the Opacity lower than 1%

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Chris MarkerSet the Opacity lower than 1%
by on May 10, 2011 at 6:13:45 pm

Hey Guys,

hows it going?

I need to set the opacity of a layer in AE lower than 1%, 0.1% to be exact...
When i try to do that i jumps to 0%...
Any ideas how to solve this?

Thank you!



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Bartek SkorupaRe: Set the Opacity lower than 1%
by on May 10, 2011 at 7:06:39 pm

In fact it didn't jump to 0%. It is set to 0.1%. Click the value and you'll see it's set to 0.1%.
The problem is that opacity means alpha. Alpha is one of the four channels that are R, G, B and Alpha.
You can't display colors (or alpha) with this accuracy. You are limited to 8 bits per channels.
Possible values are zero and multiples of 1/255 = 0.39%.
When using percentage you have minimum possible value of 0%. Next possible value is 0.39% and so on.
When you set the value to something between 0% and 0.39% the closer possible value will be chosen.
It means that if you set opacity to 0.1% - it'll be "rounded" to 0%. If you set it to 0.2% - it'll be rounded to 0.39%.

Bartek Skorupa
Warszawa, Poland

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