I do not believe it is possible to produce the long scale negatives one
needs to bring out the full capability of platinium or cyanotype
printing (especially platinium) by using ortho-litho film. I finally
gave in and went out a bought an 8 x 10 view camera and began using FP4
with Terry's developer formula and am now a very happy camper. Its not
that you cannot make some very fine negatives with ortho-litho. I stll
use such negs for gum and some cyanotype and kallitype, its just that
knowing what platinium is capable of, I hate to "waste" platinium by
using an ortho-litho negative. I suppose an argument can be made that
all platinium prints do not have to be full range. Also permanence is
all platinium prints do not have to be full range. Also permanence is
an acceptable reason for using platinium. Just my opinion.
Bob Schramm