After stitching a panorama using Photomerge, how can I crop out all the empty space on the sides? Seems like there should be a tool for this, but I can't find one in Photoshop.
Pressing "R" (or "C" in older versions) should bring up the crop tool.
It is then self-explanatory. Just use the mouse to select the area you like to crop to. You can use the handles on the sides and corners for that, too.
As explained here, you can go to
File > Automate > Crop and Straighten Photo... and have it done for you.
You should probably write a bit more about how to use the tool too, not just where to find it. As this answer stands now, it's not very informative. Aug 29, 2013 at 8:42
Tried the tool, that absolutely does not do what I describe above. It does straighten, yes, but I still end up with transparent edge content. Not what I want. Aug 29, 2013 at 21:12
I don't know what version of Photoshop you're using but in Elements 11, I get a popup after it's finished photomerging asking me if I want Photoshop to automatically fill in the empty space around the edges.
I've never managed it though. I have 8Gb RAM but that's not enough as it chugs away for a while before running out of memory!! :(
What I think it does is a content aware fill of the empty space around the edges. This costs a lot of memory and for a panorama (= big image) 8GB might not be enough. By manually selecting parts of the empty space and content aware filling it manually you can get around the memory limit. Aug 29, 2013 at 13:08
We don't get a popup in Photoshop. Thus the question. Aug 29, 2013 at 21:12