Cropping An Image That's
Off
The Canvas By Neil Blevins Created On: Sept 25th
2005 Updated On: Mar 19th 2007
Go here
to read this tutorial in Russian. This happens to me a lot. Say you have an image that's 300x300
pixels...
And you want to add a new layer of dirt to it, and your image is
500x500 pixels...
So a pretty standard thing to do is to drag the dirt layer onto your
original image, and set the dirt layer to multiply...
But now lets say you decide to make this tileable. So you select your
dirt layer and use the offset filter to offset the image 150x150 pixels
(half the size of your 300x300 pixel image). Here's the result...
Where's the seam? Well, the reason you can't see the seam is because
even though the canvas is 300x300 pixels, your dirt layer is actually a
500x500 pixel image. You're only seeing 300x300 pixels of it. So the
offset filter doesn't work the way you want it to. To make the dirt
layer tileable, you need to crop the layer such that it's now only
300x300 pixels. The way to do that is to do Select All on the image and
then hit crop. This now cuts out everything that's not on the canvas.
Now when you do your offset you'll see the results you expect, and then
can use the clone brush
to remove the seam.
