Wednesday, October 17, 2012
Jason Edwards New55 FILM
We are deep into the development of a new receiver sheet. The receiver, if you have been following along, is the part of the diffusion transfer reversal process (DTR) that was most secretly held by Old Pol. No single person at Polaroid knew the whole process. We started from scratch to find new materials to use, new paper bases that are opaque, and coating services. All of this costs a LOT of money.
Meanwhile, one of our sources of old style silver halide emulsions has gone. Efke will be missed. Shanghai still produces a negative material that works with DTR, at least for now, but their prices have doubled. These "dip and dunk" emulsions may be primitive, but the availability of the silver halide rocks close to the surface, unlike T grained films, makes DTR possible. ADOX type films can fall into this category. We've tried every Ilford film including Delta 100 and were not successful in getting consistent DTR performance, but the door is still open there.
Posted by Bob Crowley at 6:11 AM