I once had the pleasure of visiting a metal polishing service who were mad scientists in all things metal. I hit it of with the senior polishing specialist and we went on a guided tour of the premises while the business was being done. They dished a 1000mm diametre 25mm Duplex metal and polished it, producing a work for a world renowned artist.
These concave platters were on show at various stages of production, pressed, cleaned and one was a finished item. When it was unveiled the reflection was as memory serves very close to your stacked fisheye images. To be a owner of a circular dish polished to the highest degree bought from the artist and achieve a fisheye reflection would set one back, wait for it £900 000 + a two year waiting list, second ownership is a £million+.
Dr Lens done very well, wheres my cheque book.