I have 3 almost identical pictures in which the horizon lines differ. The images are the same size. Is there an easy way in PSE11 to change them so that when they're side by side the horizon line is in the same place in all three. After the change, I need the photos to be the same size, though the final size can differ slightly from the original size.
You don't state which version of PSE. I have PSEv.8.
Open the 3 photos, then in Full Editor go to File>new>photomerge group shot.
You can do it via the guided edit tab as well.
I don't want to merge them. I want to keep them as three separate photos. I'm using PSE11.
Create a new file from file-<new with width = 3 times of your image and height same.
Copy the image 1 from Edit->Copy and paste it in new file. Use move tool to adjust the position Repeat for all.