I hope to report on these along with the new MrotatorHDelta Telescopic Pole in the next couple of weeks.
Good to see the adoption of the NNP (No Parallax Point) terminology instead of the incorrect Nodal Point.
Agnos has been setting the standard on products for use with Panoweaver and panorama software in general. These new additions are bound to be a great addition to the already impressive line up.
The "Rings" look to be a great alternative and allow you to keep the Fisheye lens permanently affixed to the correct NNP. You will note that you can also "upgrade" your MrotatorT panohead to adopt these new "Ring" fittings also.
It must be said the use of "Rings" is not desirable to the heavy cameras such as the Canon 1D, 1Ds or 5D or any camera you have fitted a battery extension to. This extra weight "could" be too much load on the lens gripping "Ring" design.
Use with the lighter cameras such as the Canon 300D, 350D and Nikon D50, D70 is fully recommended.