Photoshop Help Resources Tutorials


Photoshop 911 reader asks how to create a photo mosaic by dividing the image into sections... we take this one step further and show several techniques you can bring into play for a striking photo effect...

Cut a photo into a mosaic or collage

This is a great way to present a photo when you want to portray a broken or fragmented look. It uses the concepts used at one point by fine and modern artists like Andy Warhol by the assemblage of individual snap shots, all taken of the same model, at the same time. It can be quite dramatic.
Reader example #1
Another reader suggested this example

We're going to show you hot to do both methods, random and organized. We'll also show how layer styles can be used, stroking inside and outside, as well as how to get a jump start using the slice method. That way you can make decisions based on which method is best for the project you're working on.

First: The Slice Method

Here we put Photoshop's SLICE function to work to make even divisions of the image a quick snap. Use this one if you plan to build a border outside the image slices, or you don't mind losing a bit of the image when you stroke inside the image.

Set up the file

First, we'll set up the file. This is a photo of a little girl, perfect for our Thanksgiving card. We'll set up the card to print at 300dpi, at 4.25 x 5.5 inches -- which is a standard card. We will reduce the image size a bit to allow room for borders, shadows and a textured background -- so we'll add about 100 pixels to both dimensions, using the Image > Canvas Size menu item.

Begin the slice

Grab the Slice tool (tap 'K') and hover over the image. Right-Click for the popup context menu and select: "Divide Slice". A dialog will open where you can set "Divide Horizontally into 3 slices down..." and the same for vertically. Click Okay and it's done.

In order to actually assemble your project, you'll need all those split into layers. The fastest way to do that is to choose
File > Save for Web > and then set up your file attributes. I've set this one for "no optimization" and "BEST" quality, since I don't want to disturb the 300ppi, for printing.

When you click Okay, Photoshop will split the files apart and place them in a folder called "images" in the same directory you're working in. (I changed my name to "slice" and Photoshop auto numbered them for me.)

Now, let's put them together to build our mosaic...
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