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404error
Joined: 18 Jan 2007
Posts: 15
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 Posted: Thu Jan 18, 2007 3:29 pm Post subject: Opacity Percentage |
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This is something that i never really gave much thought - but what value do the opacity parentages really have?
See my assumption was that 50% + 50% = 100%. So if you had a solid black layer set to 50% opacity and you duplicated that layer one would think that it would be solid black again... but no is only 75% black. WHAT?
The other thing is that solid black with and opacity level of 50% over solid white is a true 50% gray which is half black and half white - do to half's not make a whole?
What am I missing?[/img] |
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Rikki
Joined: 31 Aug 2006
Posts: 49
Location: Glasgow
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| Posted: Fri Jan 19, 2007 3:14 am Post subject: |
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changing the opacity setting means making things more transparent, not a simple case of halving values.
the 75% is true as you are adding 50% of 50% (half of 50=25).
_________________
www.richardramsay.com |
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404error
Joined: 18 Jan 2007
Posts: 15
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| Posted: Fri Jan 19, 2007 7:10 am Post subject: |
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still doesn't make any sense.  |
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