Hi Mike, I've used Fuji Crystal Archive RA-4 paper sometime ago to see if full color large format PH was in my future... The main problem beyond filtration is that Fuji prints their logo on the back of the paper - this will definitely show up when you contact print them to a positive image. I've asked around to see if there is any other RA-4 type paper that does not have logos printed on the back - no one can think of any (bummer).
Having said that ISO of Crystal Archive should be around 10-12, a little faster than B/W paper, but YMMV. I did not play around with filtration but it occurs to me that a blank strip of processed color negative might be a good place to start. It also occurs to me that IF you want to use color paper, Cibachrome/Illfochrome process might give you better results since you do not have to contact print to make a positive image. Dai. >I have a number of applications I wish to use Fujifilm Chrystal Archival >Type CDII as paper negatives. Do I need filters, and what types to balance >it for the following applications? Does someone have a definitive ISO for >the paper? > >Sunlight >Sunrise >Color theatre lighting >Red-hot steel > >Thank you for any suggestions. They are greatly appreciated? > >Mike Atwell
