PTGui Pro 12 no longer distinguishes between HDR and non-HDR panoramas, every panorama is HDR.If unchecked, the bracketed images will have different yaw, pitch and roll angles. Because linking the images in PTGui 12 no longer automatically gives them the same yaw, pitch and roll angles, a separate 'Link' checkbox has been added to the Image Parameters tab. This is important because differently placed seams would cause artifacts when merging the blend planes to HDR. In the 'create blend planes' workflow, linking is also necessary because it tells PTGui to place the seam identically for these images. In the 'merge to HDR, then blend' workflow these linked images will be combined to a single HDR source image. In PTGui Pro 12, linking the images will tell PTGui Pro that they belong to the same bracketed set but they don't necessarily have the exact same yaw, pitch and roll. The purpose of linking images has changed: in PTGui Pro 11, linked images would get the same yaw, pitch and roll angles but linking did not otherwise affect HDR processing.The new workflow permits creating HDR panoramas from images taken in automatic exposure mode. PTGui Pro 11 and earlier would use the reverse workflow: create blend planes for each exposure level, then merge to HDR. New HDR workflow: Merge bracketed images to HDR first, then blend.The Multiband blending algorithm used in PTGui 11 and earlier is still available as an option. Combined with the new optimum seam placement this is able to create absolutely seamless panoramas even of busy scenes with many moving objects. ![]() No overlap is needed and pixels outside the seams are not used.
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