Black Dots!

[mrpolitics]

I have been wanting an effect like this for the longest time. I finally figured out a way to do it. If there was an easier way and I missed it, let me know.

Below are some example before and after shots. The method is below

The first step is to make a selection of the light areas of the image, I'll assume you know how.
Create a new layer, make sure white is on your secondary palette, fill the layer with white. Now click the layer mask button.

Now run the color half tone filter on the layer mask, make sure the size is 8.

Now press control and click on the layer mask to select.

Now create a new layer and inverse selection and fill with black.

Now make a new layer under the newest one, and make sure nothing is selected and fill with white.

Done.

[moebius]

LOL! Nicely done!

My problem has always been removing this moire pattern... and here you've figured a way to put it back in. I'm not sure I will give this a try, but it's good to learn how to do it... just in case.

Cheers! — Möe

[PowerPix]

Originally Posted by moebius

LOL! Nicely done!

My problem has always been removing this moire pattern... and here you've figured a way to put it back in. I'm not sure I will give this a try, but it's good to learn how to do it... just in case.

Cheers! — Möe

Haha, same here 100%!!!!!!!!

[wohaver]

Moire patterns are typically caused by conflicting geometries of halftone line screens and angles. The easiest way I know to cause it (in Photoshop) is:

1. Convert image to grayscale
2. Under Filter select Halftone Screen (choose a dot size of say 4 {may vary}) and apply
3. Reselect Filter/Halftone Screen (choose a different dot size say 2) and apply

Voila - instant moire!

The image I use was a jpeg with a resolution of 72. Using an image with a higher resolution like 300 will producemore spectacular results.



wohaver

[Jennilyn76]

I couldn't do it the way you did it, but in PSP it's pretty easy...just take your photo, go to Effects, Artistic Effects, Halftone then choose a size and make sure Greyscale is checked. Voila! black dots!