HOW TO… Create a halftone dot effect in Illustrator CS4

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titel.png

Step 1:
01_open_design.jpg
Open the design you want to give a halftone dot effect.

Step 2:
02_create_layer_black.jpg
Create a layer under the original design.
Create a shape that you want to convert into dots.
I copied the outside shape of my design and filled it with black.

Step 3:
03_enlarge_design.jpg

You have to enlarge the shape so far that the later created halftone dots are visible below your original design.
My design is round so i can use the scaling option in Illustrator.
If your design has a special shape you have to manually adjust it.

Step 4:
04_effect_blur_filter.jpg
Select Effect > Blur > Gaussian Blur

05_gaussian_blur.jpg
Use a Radius
you want.

06_result_gaussion_blur.jpg
The result looks like this.

Step 5:
07_object_rasterize.jpg
Select Object > Rasterize…

08_rasterize_options.jpg
The resolution should be 600 dpi or more.

Step 6:
09_pixelate_color_halftone.jpg
Select the object and select Effect > Pixelate > Color Halftone…

10_color_halftone_options.jpg
The color halftone dialog box will open where you can enter some numbers to adjust the appearance of the effect.
Set a number for the
Max. Radius.
This will determine the size of the largest dot in the effect.
The
screen angles
should be equal.

11_color_halftone_result.jpg


Step 7:
12_live_trace_make_and_expand.jpg
We need to convert the raster image to vector.
Select the shape and select Object > Live Trace > Make and Expand from the menu.

The shape is now a full vector object.


Step 8:
13_magic_wand_tool.jpg
Select with the Magic wand tool the white area and press delete.


Step 9:
14_layers_together.jpg

Step 10:
15_final_result.jpg

Now we are able to assign the color and set the appearance of the design to overlay with the transparency menu.

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