I had just obtained a number of old Kodak Series V filters, so I decided to do some experimenting.  I took my Rolleidoscop loaded with Fuji NPH400  to Kensington Market in Toronto and spent the day using the various filters.  This was shot with a pair of Y1 filters.  I had the NPH400 cross-processed in E6 chemistry by Toronto Image Works (who sadly just discontinued their E6 processing for good).