Dithering mixes near pixels in order to best approximate, visually, the
original color impact. For something like a photograph, you'd really want
it. However, it can take what used to be a solid color and make it a
combination of pixels to get the same visual effect, but without leaving it
in solid pixels. There are times where this might not be acceptable,
particularly if you're doing some sort of color substitution or color
testing or whatever. In that case, the alternative is to just re-map the
colors (without dithering). Remapping, or non-dithering, may not be as
visually satisfying, but there may be times when technically it's necessary.
However, for you, I'd say you'd probably always want to dither. If you
didn't want to, you'd have a specific reason for it.
As far as performance, I don't know how you're using bitmaps, what you do
on the fly, etc., but chances are you shouldn't worry about it. If you
don't have any performance problems now, don't worry about it.
- Tab
At 04:54 PM 6/22/01 -0600, Tom Richardson wrote:
>Hello,
>
>Can some one please help me understand something about using the
>"Dither" feature
>in the properties settings on a bit map cast member?
>
>Here is my question,
>
>I am using all 24 bit images in my director project, if the monitor is
>set to
>16 bit instead of 24 or 32 bit most of my 24 bit images look much
>better if I click the "Dither" box in the cast member properties.
>
>So... Is there any reason why I would not simply set all bit maps in
>my entire project to "Dither" ?
>
>is there any penalty to using "Dither" I.E. CPU, performance, any
>thing?
>why wouldn't one just all ways use Dither as a matter of Default?
>
>thankyou for any insight
>Tom
>http://www.datausa.com/
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