I am in need of some advice on how to hide some seams in a panoramic stitch. The attached file shows my problem. Most of the seams are okay but the two seams in the water to the left of the image are quite visible. I have tried using the clone stamp with a soft edge and dialling down the opacity but the results are very average. I have also tried the healing brush tool, patch tool, content aware fill but none seem to work all that well.
Any suggestions on techniques / settings to use would be most welcome.
I assume you have the individual tiles in multiple layers in Photoshop? If so, how much overlap do you have at the problem area?
Have you tried putting the top layer in Difference blending mode? That should show perfect alignment as black, and poor alignment as lighter. You then in a first attempt draw a seam in the mask of the upper layer along a path that is as dark as possible, and select one side to fill the mask with black to hide and the other side white to reveal. You can then locally add a bit of blur to the seam.
If there are still discontinuities, because the surf crest is at different positions, you can then try and repair that by local warping with e.g. the Puppet Warp tool.