I have a Z1 and several other developers have a Z1 or have purchased it and waiting for it to arrive. However, most of the testing to date has been with the V. This will change over time.
If the camera stitches the images internally, you’ll need 4 seconds between shots with the THETA V. I have not tested with the Z1 yet.
If the images are not stitched, you can reduce this to 1 second between shots. If the images are not stitched, you will need to batch process the images in post production to stitch them with third-party software. In the current workflow, you will lose the metadata of the image, including orientation.
I have not tested it with the new API, which might include metadata.
I have not tested the time required for the DNG images, which does include all the image data.
To get below 1 second, we’d need to take video at lower resolution (4K) and extract the frames.
Does a spacing of 4 seconds meet your requirements?