How can I copy layers from one image file to another? I have done it before, but cannot seem to find the way this time.
This is a useful technique if you have to reprocess a raw file in Lightroom to take advantage of newer features such as chromatic aberration correction. After reprocessing, you can paste all of your selection/editing layers from the old file on to the new file. That is, if you can remember how to do it! Any help will be appreciated.
I have both CS4 and CS6.
If you have opened the RAW as a Smart Object you could just re-edit that.
Layers can be simply dragged to another image (shift-drag from the Layers Panel for identical position if both images have identical dimensions).
Or use Layer > Duplicate Layers.
If you’re working on a multi-layer document in Photoshop and you want to copy a portion of the image into a new document, there’s no need to flatten the image first. You can easily do it by making a selection around the area you want to copy and select Edit>Copy Merged from the menu, or hit Command + Shift + C. This will copy all the artwork inside the selection area, regardless of what layer it is on. Then you can paste it into another Photoshop document. Just be aware that when you paste the artwork, it will be a flattened piece of artwork.
The Shift locates the Copied Layer in the center of the Destination Image.
It's slightly more sophisticated than that.
If there's a selection in the destination document and it's bounding rectangle is at least partly inside the canvas, then Shift will result in the duplicate being centred at the rectangle's centre. Otherwise, Shift will result in the duplicate being centred at the destination canvas centre.
There could be more to it that I've missed, of course.
Oh, there are several possible parameters with Copying a Layer. As no one had made mention of any Selection, or other, I did not bother to deliniate every possiblity.
Thanks for pointing that one out.