advertisement
Forums

The Forum is sponsored by 
 

AAPL stock: Click Here

You are currently viewing the Tips and Deals forum
Illustrator Question
Posted by: karsen
Date: March 29, 2006 04:56PM
Is there a quick and easy way to create a halftone simulation? Looking for something to simulate the dot pattern similar to those used in a newpaper photo. Can't use Photoshop, needs to be vector art.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: TheTominator
Date: March 29, 2006 05:14PM
That'll be a lot of drawn dots. That'll make a big file.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: TheTominator
Date: March 29, 2006 05:23PM
In Illustrator 9 (the newest I have) I see a menu item
Filter->Pixelate->Color Halftone...
but so far I haven't seen it anything but grayed out (disabled).
Maybe it is what you are looking for.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: Seacrest
Date: March 29, 2006 05:46PM
I used to have a method for doing this. I think I created the halftone effect in Photoshop, then traced the bitmap in Streamline. But this was maybe ten years ago or more.


TheTominator Wrote:
-------------------------------------------------------
> That'll be a lot of drawn dots. That'll make a
> big file.

Not if it's vector.



Options:  Reply • Quote
Re: Illustrator Question
Posted by: Todd's keyboard
Date: March 29, 2006 05:55PM
If I understood correctly...

In Illustrator CS this can be done by going to Filter - Pixelate - Color Halftone. (The Color Halftone option is grayed out until some or all of the image is selected with the marquee tool.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: TheTominator
Date: March 29, 2006 05:57PM
Seacrest Wrote:
-------------------------------------------------------
> TheTominator Wrote:
> --------------------------------------------------
> -----
> > That'll be a lot of drawn dots. That'll make
> a
> > big file.
>
> Not if it's vector.
>

I suppose with Illustrator now using PDF and having the ability to compress the instructions down, it is smaller than it used to be with EPS, but a thousand dots means a thousand drawing instructions each of many bytes. You will have arbitrary numbers of thousands of dots for an arbitrarily large area to halftone. For this type of fill pattern a bitmap is much more efficient. Am I misunderstanding something here?

Edit: Maybe I missed a running joke.



Edited 1 time(s). Last edit at 03/29/2006 06:05PM by TheTominator.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: TheTominator
Date: March 29, 2006 06:01PM
Todd's keyboard Wrote:
-------------------------------------------------------
> If I understood correctly...
>
> In Illustrator CS this can be done by going to
> Filter - Pixelate - Color Halftone. (The Color
> Halftone option is grayed out until some or all of
> the image is selected with the marquee tool.


Ok. I got the feature to work. It only works on image (bitmap) content and produces a halftoned bitmap. It does not give a vector result.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: Seacrest
Date: March 29, 2006 06:23PM
TheTominator Wrote:
-------------------------------------------------------

>
> Edit: Maybe I missed a running joke.
>

No joke.
Vector almost always requires less data than bitmaps.
Add to that the fact that it scales infinitely.

For instance, it only takes three or four lines of code to create a black circle in Postscript and you can make that circle as large as you want with the same few lines of code.

With a bitmap, you have taken up more bits just by specifying a blank area. And the higher the resolution, the more bits required.

Even adding thousands of more circles adds less to a file's footprint than a comparable bitmap.

Options:  Reply • Quote
Re: Illustrator Question
Posted by: karsen
Date: March 29, 2006 07:15PM
Looks like the creat halftone bitmap will have to do the trick. Thanks for the info guys and gals.
Options:  Reply • Quote
Re: Illustrator Question
Posted by: swampy
Date: March 30, 2006 08:06AM
Too bad you don't have FreeHand. There is a halftone palette that allows you to assign dot/line angle and frequency to any single or all elements of a design. I use it all the time for silkscreen designs.




If you don't stand for something, you'll probably fall for anything.t
Options:  Reply • Quote
Re: Illustrator Question
Posted by: karsen
Date: March 30, 2006 09:28AM
Yeah, I always liked Freehand. I have an old copy (version 3 or 4 I think) on the shelf. Ya think that's OS X native? winking smiley
Options:  Reply • Quote
Sorry, only registered users may post in this forum.

Click here to login

Online Users

Guests: 192
Record Number of Users: 186 on February 20, 2020
Record Number of Guests: 5122 on October 03, 2020