Subtle differences between version 11 and 12 may remain, due to the fact that PTGui 11 was not color managed: the exposure fused results in PTGui Pro 11 would depend on the color space (in particular, the gamma curve) of the source images. To fix this, the exposure fusion algorithm from PTGui Pro 11 has been backported to PTGui Pro 12. But users reported they were not able to get the same results as in PTGui Pro 11 and we agree that the results in PTGui Pro 12 were indeed inferior. This also changed the exposure fusion process. In PTGui 12 the stitching pipeline was changed in order to support new HDR functionality and color management.
Based on feedback from users, the exposure fusion algorithm is reverted to the algorithm that was used in PTGui Pro 11.Later Windows 10 versions and Windows 11 are not affected as they support a dark theme natively. On old Windows 10 versions (before May 2019 update), when using the dark theme, PTGui no longer has a dark title bar, to fix some rendering issues.Fixed: PTGui Viewer failed to start on old Windows 10 versions (before May 2019 update).Fixed: Opening a PTGui Pro project in the standard version could result in an Assertion Failed error.Fixed: Export to PTGui 10 project would have the yaw, pitch, roll values of all images set to zero.
The window would appear to be stuck in the 'loading panorama' stage.