For still photos, the Ricoh Theta S saves only a stitched JPEG panorama, not the two original fisheye source images. According to the shared answers, stills are output as a single 5376×2688 JPEG (high resolution) or 2048×1024 JPEG (low resolution). The panorama is saved in equirectangular projection, covering 360° horizontally and 180° vertically.

So if your workflow depends on stitching the two lens images yourself in Hugin, the Theta S still-photo mode won’t provide those inputs. Community reports also indicate the original fisheye stills are not available through the camera/SDK. Because the image is already stitched, you generally can’t recover the original lens views afterward.

That said, the saved equirectangular JPEG can still be used in Linux tools that support standard 360×180 panoramas, and you can reproject it into other views if needed.

Video is different: the camera records MP4/H.264, and some users have noted fisheye views can be accessed from video workflows, but not for normal high-resolution still capture.