2 Replies Latest reply: Aug 12, 2014 11:14 AM by cyberbaffled RSS

    Photomerge parameterization

    cyberbaffled Community Member

      Given: a group of twelve mid-format images (scanned from film) that originated by myself standing on a mountain summit and rotating in 30 degree increments, keeping the camera level and always keeping the same percentage of sky visible above the mountain range in the distance (the subject of the photographs).  My goal is to compose(stitch)  these images with an absolute minimum of bending and distortion.  Because the elevation of the horizon changes for each of the twelve exposures the photographs cannot be stitched in such a way as to form a rectangular bar of images.  That's OK because my priority is the fidelity of the way the photos capture the distant range of peaks, and the elevation of the terrain from which those peaks rise changes over the 360 degrees of the horizon.   Given that, does anyone have any experience with setting the parameters of the "photomerge" utility which would stitch the twelve images with the minimum of stretching and distortion?

        • 1. Re: Photomerge parameterization
          Noel Carboni Community Member

          Sure, I've done a lot of really wide panos including some 360 degree ones.  Use the "Cylindrical" choice for landscapes, and check the [ ] Blend Images box.  You'll likely not notice any distortion unless you're right up next to a straight road or wall.

           

          You say your images are scanned from film...  Is there Vignetting in them?  If so, you might find that you'll need to process them a bit before stitching them.  With all digital conversions Photoshop kind of knows (via lens profiles, etc.) how much correction to make.

           

          By the way, there is a current problem with Photomerge in Photoshop CC 2014.1 (that wasn't there in 2014.0).  Are you using the 2014.1 version?  If so, do you still have 14.2.1 installed?  You might want to use that one instead.

           

          -Noel

          • 2. Re: Photomerge parameterization
            cyberbaffled Community Member

            Noel, thanks for your prompt and informative reply.  My scanner allows no vignetting and I'm using Photoshop CS5.5.  This will be a somewhat time consuming process, since I'm making the photo(s) available for purchase, however I'll post my experience for you to see.