Hi. You’ve posted your question in a forum that is for beginners trying to learn the basics of Photoshop. I'm moving your question to the Photoshop General Discussion forum for specialized attention to your situation.
Hi there -
I'm not sure if this is waht you're looking for, but I've posted a quick tutorial below on adjusting halftone settings using Photoshop's bitmap mode. It would be helpful if you could post an example of the effect you're trying to achieve
You can apply a halftone effect to you image by using Photoshop's Bitmap mode. Go to Image > Mode > Bitmap... **Note that your image must be in grayscale to use Bitmap mode.
From the first bitmap dialog box, choose "Halftone Screen" from the Method area. Click OK.
In the next dialog box, you can set the frequency of the halftone, as well as the shape and angle of of the halftone.
The effect below was produced using a square halftone with a frequency of 20 lines/inch at a 45 degree angle.
Here's a tutorial on this process: http://www.laughing-lion-design.com/2012/03/create-a-halftone-effect-in-photoshop/
If this did not answer your question, please don't hesitate to post again! Also, if you have any examples of the effect you're trying to acheive, please include those.
If you used genuine hexagons, you possibly used a tiled pattern...