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What Illustrator Filter creates this effect? 1

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daviddooley

Vendor
Jun 10, 2004
4
US
I see this effect used all the time, but never have figured out what filter it is or where to get it. Any help is grateful.

t_16920.jpg
 
David:

It's a halftone dot pattern. There are ways to achieve this effect, but there's no simple click on a filter that will do this. The closest I can get to a simple click is this (In a RGB mode document):

1. Draw a circle, hit Ctrl-C (Copy, but don't paste yet);
2. Apply a radial gradient to it, black in the center to white on the edge;
3. Set the document raster effect settings to 300dpi;
4. Effect>Pixelate>Color Halftone, set all channels to the desired angle (in this case, 0 degrees), and pick a number for the radius (you can alter any settings live later on from the appearance palette item);
5. Ctrl-B (This pastes the previously copied circle in the back) and fill with desired orange;
6. Select both, Make Opacity Mask, then Invert.

It's all live, so you can control everything from the appearance palette if need be.

The result should look something like this:

orange.gif


Bert Philippus
 
HOw do you do a Opacity Mask in Illustrator? I do mask in Photoshop, but never Illustrator.

THanks alot.
 
but Bert, your way to do it would lead to a raster object!? is there also a way to do it vector? or did i get something wrong.
 
Boris:

The result can be converted to vector easily enough. As long as the resolution is high enough, here's how to get vectors:

1. Select all, Object>Rasterize, at least 300 dpi, and make sure BG is set to transparent;
2. In the appearance palette, Add New Fill;
3. Effect>Path>Outline Object;
4. Object>Expand Appearance;
5. Select the raster portion only, delete it, now you should have a vector rendition of the art. It won't be clean, but it's vector.

I'm trying to figure out a way to do it in vector right off the bat, but so far no luck... If I find it, it will be posted here.

Bert

Bert Philippus
 
itchybug,

What numbers exactly did you use to create your image shown above? I've tried several number, but none of them are coming out looking that good. Thanks for all the help by the way :)
 
to daviddooley:
I think it is not up to the numbers in the pixelate effect. its has more to do with the location of the gradient sliders. now as Bert posted the source file there should be no questions left. Thanks Bert! it was interesting learning!
 
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