PTGui

By PTGui

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Panoramic image stitching software for Windows and macOS. Originally started as a Graphical User Interface for Panorama Tools (hence the name), PTGui has evolved into a full featured, industry leading photo stitching application.

Stitching With PTGui

Note that you only need to stitch the spheres if you are working with DNG images.  You first need to export from DNG to JPG, TIFF, or PNG.

Assuming you are working with DNG images and don't have Lightroom, you can use darktable.

 

Export Files from lighttable -> export selected

RICOH has an official plug-in for Adobe Lightroom that works great. If you do not have Adobe Lightroom you can use PTGui 10 11.13 or newer for stitching.

Using PTGui on Linux to Stitch Z1 Images

Using Ubuntu 18.04 and Play on Linux with acceleration disabled.