The images were scanned from prints. The images may suffer from parallax. The day was breezy with the result that some of the foliage on the bushes and trees moved between on image and the next. Different applications stitch in different ways and therefore may seem to produce better or worse results because of this. These images are 1999 by James Rigg.
Unauthorized reproduction is a violation of copyrights.
The only image processing applied to the images was to crop them and to apply the Panorama Factory's sharpening filter. Attention to detail is important. There are many sources of loss of sharpness in the resulting image. First, and perhaps most significant, small misalignments between adjacent images can lead to loss of sharpness in the overlap region. Camera moved between images.