Re: Tiff with mask
Re: Tiff with mask
- Subject: Re: Tiff with mask
- From: rsharp <email@hidden>
- Date: Mon, 18 Feb 2002 09:27:06 -0600 (CST)
On Mon, 18 Feb 2002, Ondra Cada wrote:
>
Mamdouh,
>
>
>>>>>> Mamdouh (M) wrote at Sun, 17 Feb 2002 22:20:52 +0100:
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M> So my question is how do i make tiff4s with masks?
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>
You don't. TIFFs don't support masks. They support much better thing -- the
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alpha channel. Just set whatever part of your image which should be
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transparent to have full alpha, and whantever part which should be opaque to
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have zero alpha.
>
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BEsides, you can use all the values between 0 and 1 to have partially
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transparent parts of image, which is something mask would never allow you.
Masks do not have to be limited though to 1-bit depth. Whether you call
it a mask or an alpha channel really makes no difference.
Rick Sharp
Instant Interactive(tm)
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